Well      06/15/2019

Thyssen favorite window profile. Thyssen is the favourite. Favorit windows - a new standard of comfort

Thyssen Profile produced by the company Deceuninck. The Deceuninck Group is an international group of companies specializing in compounding, design, development, extrusion, finishing of PVC systems and profiles and recycled products. The company operates in 32 countries, has 18 subsidiaries (manufacturing and / or representative offices), has 2,700 employees, 560 of which work at the main plant. Company Thyssen Polymer(subsidiary Deceuninck) three plants: one, the main one is located in Bogen (Southern Germany), and the other two are in the USA. The four most important markets of the company are Germany, North America, Central, Eastern and Southern Europe. At present, the company occupies fifth place in Europe and in the USA for the production of PVC profiles.

Profile of Thyssen Favorit. Thyssen Favorit profile design

The pride of the company "Dekenink-Thyssen Polymer" was the profile system "Favorite", developed specifically for the Russian market, which allowed the company to deploy active activities in Russia, satisfying the needs of the demanding Russian buyer.


Plastic windows Thyssen Favorit- this is a complex system, originally conceived and developed specifically for Russia with its harsh climatic conditions, is a joint product of German and Russian specialists.







  1. Five air chambers for high thermal protection (class 1 according to GOST 30673).

  2. Width 71 mm for optimal temperature distribution in the profiles.

  3. Installation of double-glazed windows up to 47 mm wide is possible.

  4. Beadings with two support legs guarantee reliable glazing.

  5. Two planes of sealing gaskets protect against blowing.

  6. Reliable steel liners, the same in the frame and sash, ensure the perception of severe wind loads.

  7. Auxiliary profiles snap into mounting clips.

  8. The hinges are installed through plastic and steel.

  9. Water drainage and ventilation of double-glazed window folds go through the outer chamber.

  10. The axial dimension of the fittings is 13 mm, which increases the protection against burglary.

  11. The 45° tilt is used for good diversion water and elegant design.

Why plastic windows from the Thyssen Favorit profile provide a high level of comfort?


  • The room is warm in winter and cool in summer.

  • Thermal comfort not only indoors, but also near the window.

  • The height of the porch increased to 9 mm prevents the penetration of dust and noise into the room.

  • Easy to clean due to the absence of condensation.

  • The geometry of the profile makes it easy to remove dust from the groove for the glazing bead.

  • Possibility of installation of the climatic valve "Regel-Air" for improvement of a microclimate.

  • The plastic mullion connector excludes freezing at the junction, unlike metal connectors, and the strength of such a connection is higher than a standard metal one.

How PVC windows from the Thyssen Favorit profile differ from analogues?

1. Increased thermal protection due to the width of 71 mm and 5 air chambers with a minimum width of 5 mm.

The high resistance to heat transfer of the profile system increases the reduced resistance to heat transfer of windows as a whole. According to the calculated data, for the FAVORIT system with identical double-glazed windows and with a ratio of glazing area to product area of ​​0.7, this important indicator increases at 0.03 m2S/W.

2. Reducing the "edge effect" of double-glazed windows, due to the width of the profiles of 71 mm and the height of the pinching of the double-glazed window of 20 mm.

The analysis of the distribution of isotherms in the profiles of the system showed a significant decrease in the "edge effect" of a double-glazed window, that is, the formation of condensate along its perimeter.


3. It is possible to install double-glazed windows up to 47 mm wide in windows.

Although we are advocates of the use of selective coated glass in insulating glass units, economic situation in many regions is still such that the use of double-glazed windows is more justified. With an increase in the width of the air gap of a double-glazed window by 2 mm in the range from 10 to 15-16 mm, it gives an average increase in its resistance to heat transfer by 0.02 m2C / W. As a standard double-glazed window for the FAVORITE system, best option with a total thickness of 36 mm.


4. The system includes elite doors made of five-chamber profiles with a width of 71 mm, and the possibility of using thresholds with a thermal insert.


So the resistance to heat transfer entrance doors from profiles "FAVORIT" will be at least not lower, and when using sandwich panels of a large area, higher than that of windows, which will fully comply with the requirements of the standards.


5. The compound (raw mix) is prepared for the use of profiles in the harsh Russian climate.


Plastic windows must withstand the most severe frosts, therefore, its composition is given Special attention impact modifier. The climate impact profile refers to "frost resistant";

Vicat softening temperature is +89 C;

impact strength according to Charpy 44 kJ/m2;

strength corner connections exceeds the requirements of the norms by two to three times!;

confirmed durability 50 conditional years of operation(for temperate climates) and 20 for northern regions.


6. High static reliability and dimensional stability of the system due to increased moments of inertia of steel reinforcements and the strength of the PVC profile itself.

The moment of inertia of the impost is two times higher than that of other profile systems.


7. Height of porches: outside 8mm, inside 9mm.

This height of the porches guarantees a secure fit of the sashes to the frame and wide opportunities hardware adjustments. Together with a specially shaped elastic seal, this gives high sound insulation and window density. At the same time, if necessary, the Regel-Air climate valve can be installed in the windows.


8. Weldable seals made of thermoplastic elastomers (TPE) of gray color are used in the constructions of windows of the FAVORIT system.

The gray color of the seals gives the windows a new, elegant design. The stretched seals are welded together with the profiles, which speeds up and simplifies the production of windows.

9. The axial fitting size of 13 mm increases the anti-burglary properties of the FAVORITE windows.


10. The profiles are elegantly designed with a 45° slope and impeccable surfaces.

Along with all the above technical features, the company made sure that the price of the FAVORIT profile system was competitive compared to the three-chamber systems that are dominant today with a width of 60m.

Specifications optimized for Russia, together with accessibility to the mass consumer, make the FAVORITE system a unique offer for Russian market.

The presence of an excellent technical concept and a balanced pricing policy are prerequisites for the widespread use of windows made of FAVORIT PVC profiles in municipal and private construction in Russia.

From the article you will learn:

Windows largely determine the quality of housing. If you value impeccability and quality, then Thyssen-Favorite plastic windows are what you need.

production window profiles"Favorite" is engaged in the Belgian-German concern "Dekenink-Thyssen Polymer" - the world leader in the production of window profiles. Having conquered the American market, the concern has developed a special profile system for Russian consumers that can satisfy the most demanding requirements.

Windows "Favorite" represent the best combination of price and quality. With a unique set technical properties, they can compete on price with all 60mm wide three-chamber systems on the market today.

Thyssen plastic windows are an example of quality and reliability. They have a range of benefits. Thyssen windows have optimal thermal insulation properties, three-chamber profile withstands everything thermal loads, both low temperatures and strong wind and solar radiation. Elegant Design, impeccability of components, strength and durability are also the advantages of Thyssen plastic windows.

Perfectly adapted for Russia specifications combined with a competitive price, we can say that Thyssen windows are a unique and very attractive offer on the Russian market. A balanced pricing policy and an excellent technical concept will make it possible to widely use windows made of Thyssen PVC profiles in construction.

PVC window profile Thyssen Favorit

Thyssen Favorit- This is a modern plastic profile. It has a width of 71 millimeters and is class 1 according to GOST 30673. This profile provides excellent performance in terms of heat saving and sound insulation. Thyssen Favorit is equipped with Thyssenite modifier. It increases the characteristics of the profile in terms of frost resistance from -60 to +75 degrees Celsius.

Impact strength:

  • Vicat softening point is 88°C;
  • Charpy impact strength 44 kJ/m2.
  • The thermal insulation properties of Thyssen Favorit are 20% higher than those of three-chamber profile systems with a wall width of up to 60 millimeters.

The composition of the raw materials from which the profile is made is specially prepared for use in the harsh Russian climate. Plastic withstands the most severe frosts, therefore, special attention is paid to impact strength in its composition. The THYSSEN FAVORIT profile in terms of weather resistance is referred to as "frost resistant".

The THYSSEN FAVORITE profile uses a unique sealant made of a highly durable composition with an anti-shrink cord. This seal is patented by THYSSEN. According to the test results, the durability of the seals of this system is 30 years.

THYSSEN FAVORIT profiles are certified by all testing institutes and meet the relevant quality and technical requirements.

Advantages pvc windows THYSSEN FAVORITE:

  • 5 (five!) air chambers for maximum heat protection and noise protection
    - free removal of moisture creates optimal density,
    - optimal thermal insulation properties,
    - 2 solid sham seals provide optimal protection against rain, noise and cold,
    - large metal reinforcements give the structure strength and durability,
  • installation of double-glazed windows up to 47 mm wide is possible
  • increased protection against burglary of windows and doors is provided by the axial size of the installation of fittings of 13 mm

PVC profiles ThyssenPolymer are made of rigid polyvinyl chloride, without the use of lead stabilizers, which allows you to maintain a favorable environmental balance at home.

Plastic windows Thyssen FAVORITE are an example of quality. The technically perfect profiles are processed individually by a specialized company and meet the highest demands.
The Thyssen profile is the successor to the profile system proven over the years in a new design. Frame and leaf profiles with a 45 degree bevel, flawless surfaces and light gray seals. give the window elegance and lightness. They look equally good in modern houses, as well as in ancient facades

OUR SERVICES:
  • Consultation of a specialist - our managers-consultants will help you make the right choice and choose the type of plastic windows and accessories that YOU need. You will save yourself from the need to understand the endless flow of technical information, our experts will help you make the right choice!
  • Measurement window openings at your cottage - our experts go free of charge to measure for drawing up a detailed specification, as well as advising the client on any questions he has.
  • We work only with high-quality, time-tested specialized PVC system mi and accessories.
  • The design possibilities of the presented profile systems are practically unlimited, which allows you to implement any design and color solutions. This is important for residents of non-standard series of houses and cottage settlements.
  • The company "Mir Krovli" has a flexible system of discounts for its customers. In addition to the basic discounts that apply to the glazing of cottages, we will be happy to provide you with an additional discount on products purchased from us. roofing materials.
  • Individual approach to every client.

The Deceuninck Group, headquartered near Roeselare (Belgium), is a global group of companies and one of the leading developers and manufacturers of window systems and rigid PVC building profiles for windows, doors, winter gardens and facades.

Among the main activities are the production of compound, design, extrusion, finishing of PVC systems and profiles and production of products from recycled raw materials.

The acquisition of Thyssen Polymer in 2003 made Deceuninck the undisputed world leader in PVC profiles for the construction industry. Thyssen Polymer, which ranks fifth in Europe and the US in the production of PVC profiles, owns three large plants: in Bogen (Southern Germany) and in the USA. The company's four priority markets are Germany, North America, Eastern, Central and Southern Europe. Thyssen Polymer's core business - extrusion of PVC profiles for the construction industry - coincides with that of Deceuninck, so together Thyssen Polymer and Deceuninck will take the lead in this sector. The group of companies will be united by both joint activities and an integral structure, as well as common programs for cost control and optimization of all existing processes. Of course, these programs are designed with customers in mind first, as the highest quality products, fast delivery and optimized customer interactions are the main reasons for the company's success.

Today the concern operates in 32 countries, with 18 subsidiaries (manufacturing and / or representative offices), has 2,700 employees, 560 of which work at the main plant.

The product range includes wide choose basic and additional profiles for the construction industry (both for new buildings and for the renovation of old ones), main areas of application: window and door systems, winter garden systems, home security, multifunctional profiles, exterior and interior decoration premises.

Production

Thyssen Polymer production sites are located in Germany and the USA, there are also representative offices for the sale of products in Poland and Thailand. The company employs about 900 employees.

All plant equipment is manufactured in a modern workshop in Bogen, which includes CNC processing centers with milling machines CNC, crushing machines, lathing, sewer and wire machines, as well as CNC measuring equipment.

The plant in Bogen has 48 automatic extrusion lines with a total capacity of about 210 tons of profiles per day; work is done in three shifts. The applied technology department guarantees maximum support for the processor.

Consistently high quality of all products and level of service is ensured by the implemented quality management system. A large number of received international certificates confirms the high quality requirements for the main components of PVC.

Quality control is carried out at each stage of production, starting from the stage of receipt of raw materials. The fully equipped in-house laboratory measures and records physical and chemical properties raw materials.

Series of produced profiles

Number of cameras 3

Profile width 60 mm

Insulating glass width up to 39 mm

Number of cameras 5

Profile width 71 mm

Width of a double-glazed window up to 47 mm

"BAUTEK"

Number of cameras 3

Profile width 71 mm

Width of a double-glazed window up to 47 mm

REHAU-Thermo-Design

The increased thermal insulation of the REHAU Thermo-Design four-chamber profile is provided by a system depth of 60 mm.

The high characteristics of this profile in terms of airtightness and watertightness (load groups A, B and C) were obtained due to the persistent seals installed around the entire perimeter of the frame and sash with a wide contact patch. At the same time the same appearance and system depth allow the Thermo-Design system to be freely processed in parallel with the Basic-Design system, which is a huge advantage for fabricators.

Advantages:

Increased thermal insulation due to the four-chamber design, kr value = 1.5 W/m2K.

Optimization of the production process. The same milling contour with identical rebate geometry for the frame, sash, impost and sash eliminates the need to rebuild the equipment. Possibility of parallel processing of the REHAU-Basic-Design and REHAU-Thermo-Design series without the need to rebuild the equipment.

Reliable mounting of all additional profiles is ensured by the protrusions on the lower surface of the profile.

Same reinforcement types for REHAU-Basic-Design and REHAU-Thermo-Design series.

A wide range of profiles, including an elegant sash with rounded outer surfaces.

Versatile design possibilities thanks to the standard color palette.

The outer contour of the profiles can be processed as conventional machines as well as CNC machines.

The width of the seal fit is 8 mm, which is achieved due to the height of the overlap of the frame of 20 mm on the outer side of the window. In combination with an internal seal also 8 mm wide, the joints are impenetrable up to load group C.

The elegant design of REHAU-Thermo-Design profiles is given by 15-degree bevels on the visible outer surfaces.

REHAU-Brillant-Design

This series is five-chamber profile with 70 mm system depth.

window REHAU profiles Brillant-Design have a kr value of 1.5 W/m2K, which makes the structures made from them suitable for buildings with passive heating. Such windows also have higher noise insulation, since they can be equipped with double-glazed windows up to 41 mm thick.

The profiles of the REHAU-Brillant - Design system have a glossy surface, bevels or roundings on the outside of the sash and a wide color palette that will satisfy the most demanding consumer.

Advantages:

Rational production. The same milling contour with identical rebate geometry for the frame, sash, impost and sash eliminates the need to rebuild the equipment. Reliable mounting of all additional profiles is ensured by the protrusions on the lower surface of the profile.

The arrangement of the drainage slots is the same with the REHAU-Basic-Design and REHAU-Thermo-Design systems, i.e. there is no need to rebuild the equipment.

Identical reinforcement and fittings with REHAU-Basic-Design and REHAU-Thermo-Design.

Identical deduction sizes with REHAU-Thermo-Design.

Reduced storage costs: compatible with various additional profiles (60 or 70 mm system depth) due to the special arrangement of the tabs for attaching additional profiles.

Brilliant appearance thanks to high-quality glossy surfaces, doors with rounded or beveled visible surfaces and a wide range of colours.

Locking fittings are attached through 3 PVC walls or additionally into metal reinforcement.

Thanks to the frame overlap height of 20 mm on the outer side of the window, a sealing width of 7 mm is achieved. In combination with an 8 mm internal seal, the joints are impermeable up to load group C.

The width of the reinforcement chamber of 35 mm makes it possible to use reinforcements with high static properties.

Efficient water drainage is provided by a slanting seam at the frame and sash.

REHAU-Sib-Design

Economic REHAU-Sib-Design system with 70 mm profile system depth

created for customers for whom the most important thing is “warmth and comfort in the house”. Features such as the use of REHAU-Thermo-Block and the constructive possibility of installing double-glazed windows up to 44 mm thick help to reduce heat loss in the room. In addition, the frame depth of 70 mm further improves the thermal insulation performance of the window.

Two different ways design solution of sash profiles make it possible to produce both single-plane and window blocks with a displaced front surface of the box and sash.

The ability to produce reliable window blocks with sashes of considerable height and width is provided by improved mechanical characteristics due to the installation of reinforcing reinforcement.

Ease of maintenance is guaranteed smooth surface profile.

Thanks to its integrity window structures REHAU-Sib-Design have minimal water permeability.

Advantages of the REHAU-Sib-Design window profile system:

REHAU-Sib-Design with a system depth of 70 mm meets the highest standards: the heat transfer resistance of a package of reinforced profiles Rpr = 0.72 m2 0C / W.

Optimization of the production process. The milling contour is identical to the REHAU-Brillant-Design system. Mounting feet on the lower surface of the profile provide secure attachment of additional profiles.

The possibility of combining the REHAU-Sib-Design frame with the REHAU-Brillant-Design leaf allows the fabricator to expand its product range by manufacturing external and internal opening entrance doors.

Identical rebate seals in frame and sash.

Reducing storage costs: the ability to install standard reinforcement in the frame and sash. Reinforcement is identical to that used in other REHAU profile systems.

Efficient water drainage is ensured by an oblique seam at the frame and sash. Due to the height of the overlap of the frame on the outside of the window, a seal overlap width of 7 mm is achieved. In combination with an internal overlap of 8 mm wide, a high degree of air and water tightness of the seams is ensured.

The elegant design of REHAU-Thermo-Design profiles is given by 20-degree bevels on the visible outer surfaces.

A wide choice of colors and decorative designs of REHAU-Sib-Design profile products - from classic white to lacquering and laminating with a wood grain texture.

About company

The Deceuninck Group, headquartered near Roeselare (Belgium), is a global group of companies and one of the leading developers and manufacturers of window systems and rigid PVC building profiles for windows, doors, conservatories and facades. Among the main activities are the production of compound, design, extrusion, finishing of PVC systems and profiles and production of products from recycled raw materials.

The acquisition of Thyssen Polymer in 2003 made Deceuninck the undisputed world leader in PVC profiles for the construction industry. Thyssen Polymer, which ranks fifth in Europe and the US in the production of PVC profiles, owns three large plants: in Bogen (Southern Germany) and in the USA. The company's four priority markets are Germany, North America, Eastern, Central and Southern Europe. Thyssen Polymer's core business - extrusion of PVC profiles for the construction industry - coincides with that of Deceuninck, so together Thyssen Polymer and Deceuninck will take the lead in this sector. The group of companies will be united by both joint activities and an integral structure, as well as common programs for cost control and optimization of all existing processes. Of course, these programs are developed primarily with consumer requirements in mind, since the highest quality of products, their fast delivery and optimization of customer interaction are the main reasons for the company's success. Today, the concern operates in 32 countries, with 18 subsidiaries (production and / or representative office), has 2,700 employees, 560 of whom work in the main plant.

The product range includes a wide range of basic and additional profiles for the construction industry (both for new buildings and for the renovation of old ones), main areas of application: window and door systems, winter garden systems, home security, multifunctional profiles, exterior and interior decoration. Thyssen Polymer production sites are located in Germany and the USA, there are also representative offices for the sale of products in Poland and Thailand. The company employs about 900 employees.

All equipment for the factories is manufactured in a modern workshop in Bogen, which includes CNC processing centers with CNC milling machines, crushing machines, machines for the production of purlins, sewers and wires, as well as CNC measuring equipment. The Bogen factory has 48 automatic extrusion lines with a total capacity of about 210 tons of profile per day; work is done in three shifts. The applied technology department guarantees maximum support for the processor.

Consistently high quality of all products and level of service is ensured by the implemented quality management system. A large number of received international certificates confirms the high quality requirements for the main components of PVC. Quality control is carried out at each stage of production, starting from the stage of receipt of raw materials. In a fully equipped in-house laboratory, the physical and chemical properties of raw materials are measured and recorded.

The factory has a laminating department that produces several types of films with different coatings. Also available are films of various colors and imitating wood structure.

The logistics department is located together with the warehouse in Hunderdoff with a total area of ​​22,000 m2. The warehouse is located near the main road A3, 6 km from the plant in Bogen.

Series of produced Thyssen profiles

Number of cameras 3

Profile width 60 mm

Insulating glass width up to 39 mm

Seal color and material Black, EPDM

The system of profiles "FAVORIT" embodies ideas about modern design and the latest achievements of the window industry. Windows made from profiles of the FAVORIT series are ideal for operation in the Russian climate due to improved heat and sound insulation properties and great durability

Number of cameras 5

Profile width 71 mm

Width of a double-glazed window up to 47 mm

Seal color and material Grey, TPE

"BAUTEK"

This is a unique three-chamber system with a width of 71 mm, which is characterized by impeccable quality, reliability and economy.

Number of cameras 3

Profile width 71 mm

Width of a double-glazed window up to 47 mm

Seal color and material Black, TPE

Plastic windows THYSSEN Favorit is a new PVC system concept from Deckenink. THYSSEN Favorite gives answers to any questions, while not requiring any evidence. This is the result of hard work, where attention is paid to the smallest details. Today THYSSEN Favorit is an excellent combination of technology and quality, which certainly leaves other profile systems far behind.

It is a worthy successor to the Mondial series from Dekenink. But at the same time, Zendow is not just a new profile system, it is based on a well-thought-out strategy and concept that has acquired the label of “Total Innovation” in the traditional window system sector. The Zendow concept is much more than just a window system. Namely, proof of the leading role of the organization in Deckeninck. THYSSEN Favorite is more than a huge technical breakthrough. This system reflects Deckenink's vision and strategy as a complete systems supplier offering an absolute product of the highest quality.

Using basic components to create different profile sections THYSSEN Favorit

In addition to radical optimization and rationalization of parts, other additional functions have been added to the system. The most noticeable is undoubtedly the rim located in the middle of the drainage space. At first glance, this is an inconspicuous detail, but it is just a typical confirmation of how a small detail can become one of the main parts of the whole concept. It not only separates the drainage space into dry and wet zones, but is also double-sided for regular windows that open outwards. At the same time, it serves as the basis for other functions. For example, it provides the ability to stretch the central seal. In light of the increasing demand for thermal insulation characteristics, this is an excellent argument in the flaring struggle among famous PVC suppliers systems when creating a system with the largest number cameras.

Choice of design THYSSEN Favorit

As a rule, the simple approach turns out to be best solution. The design of THYSSEN is a clear confirmation of this. The unique shape of the profiles claims to be individual, complementing existing architectural styles. In essence, THYSSEN Favorit is an example of modern architecture, while maintaining warm, natural lines that caress the eye. Moreover, studies have shown that a radius of 8 + 5° is the most preferred. People who evaluated the profile from different points of view: manufacturers (from the point of view of the production process), designers (from the point of view of moderate design), marketers (from the point of view of competition) and, finally, consumers (for whom the main thing is modern look and ease of care) were most fascinated by the subtlety of the lines.

System Benefits

Benefits for the manufacturer

  • Rationalization in production. The use of modular profiles leads to a reduction in their total number. By focusing on modules, THYSSEN Favorit not only reduces the level of complexity in the production process, but also simplifies it in the face of change. In other words, THYSSEN Favorit will allow the manufacturer to abandon parts of the production that have become unnecessary without significant changes in his process.
  • Use of 70 mm profiles. IN profile systems THYSSEN Favorit all improvements made with best attitude price quality. THYSSEN Favorit was created with the possibility of using both 3 and 5 cameras in the same profile system.
  • Simplicity in production. Unique design the profile combines several innovations to improve speed and efficiency of production, such as the use of 8 mm holes for drainage; simple and precise fixation of profiles due to the use of latches; the installed multifunctional sealant is also both an external and internal barrier to moisture. No more manual installation required.

Plastic windows Thyssen Bautek can be used in the most severe climatic conditions.

Thyssen Bautek plastic windows have a frame and sash thickness of 71 mm, which increases many of the characteristics of these systems!

A double-glazed window with a thickness of 36 mm is installed. the plastic profile is equipped with three air chambers and weldable gray seals made of thermoplastic elastomers.

Gray seals well emphasize the beauty and elegance of the BAUTEK window itself, both white and laminated.

"Tyssenite" - a special chemical component based on an impact strength modifier, has been added to the composition of the BAUTEK window profile, which ensures the strength of the profile at any temperature.

Thyssen BAUTEK plastic windows are equipped with the best German AUBI fittings, which have unique additional options.

Architectural Benefits of Zendow THYSSEN

  • Execution. THYSSEN Favorite has reached the limit of quality using Newest technologies when creating an architectural image. It is designed to serve the manufacturer, installer and customer. THYSSEN Favorit is the latest and most reliable PVC system. It was created to provide you with warmth and sound insulation, as well as the ability to ignore any weather conditions.
  • Design. With its captivating beauty, superb symmetry and amazing new whiteness, Zendow THYSSEN strikes the perfect balance of aesthetics and functionality. It is compatible with various designs and allows you to maximize the glazed space. A large number of add-ons allows you to increase the possibilities to meet the needs of the customer.
  • Practicality in use. The modular, versatile, multifunctional THYSSEN Favorit system can be used both in construction and renovation. The main ones are ease of manufacture and installation. But this was not achieved at the expense of quality.