WDS 76 AD — Progress in Every Millimeter. This system embodies the current European glazing standard that is steadily taking over from the familiar 70-millimeter windows. Those extra 6 mm of installation depth (76 mm) deliver a major gain in structural stiffness and glazing flexibility.
Why pick the 76 mm platform:
The perfect mix of technology and price for glazing today's apartments in Barcelona, Valencia, and Madrid.
Brand
WDS — modern window systems combining European quality and affordable prices. The manufacturer uses German technology and strict quality control, offering a wide range of profiles: from economical 5S to flagship 8S at Passivhaus level.
More about WDSTechnical Specifications
The new European benchmark. A 76 mm system that takes powerful glass units without the premium price tag.
Engineering Specifications:
Glass Filling Choices:
Largest Build Sizes:
Tested Performance:
Documentation
The new European benchmark. A 76 mm system that takes powerful glass units without the premium price tag.
For a standard 2-sash tilt-and-turn window (1200 × 1400 mm) with basic double-glazed unit.
Alternative solutions from other manufacturers
Side by side
How WDS 76 AD (76 mm) stacks up against the closest matches from other brands.
| Specification | WDS 76 AD (76 mm)This profile | Veka Softline 76 | Rehau Brillant-Design 80 | Kömmerling EuroFutur Elegance |
|---|---|---|---|---|
| Brand | WDS | VEKA | REHAU | Kömmerling |
| Material | PVC | PVC | PVC | PVC |
| Profile depth | 76mm | 76mm | 80mm | 70 mm |
| Chambers | 5 chambers | 5 chambers | 6 chambers | — |
| Glass unit, max | up to 48mm | up to 48mm | up to 44mm | up to 39 mm |
| Thermal (Uw) | 1.1 | 1.1 | 1.1 | ≤ 1.1 |
| Sound (Rw, dB) | ≈46 Rw(dB) | ≈47 Rw(dB) | ≈45 Rw(dB) | ≈ 40 Rw(dB) |
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FAQs
It is a 76 mm deep PVC profile with a 5-chamber layout and a 113 mm frame+sash height. The outer wall is Class A gauge (per DSTU/EN) for stronger corner welds, and it carries a square or U-shaped galvanized-steel insert up to 2.0 mm thick. Sealing uses 2 contours of TPV gasket in black or gray.
AD (Anschlagdichtung) is an outer-seal design with 2 sealing contours rather than the 3 used by the WDS 76 MD. With no middle gasket, the frame rebate stays open and smooth, so it wipes clean easily. This keeps the AD friendlier on price (from €460 vs €520 for the MD) while the MD reaches Uw ≤ 0.92 versus the AD's Uw ≤ 1.1 W/(m²·K).
The 76 mm frame accepts glazing up to 48 mm — deeper than the 70 mm WDS 6S/7S, which cap at 40 mm. Suggested fills are double-chamber 40 mm or 44 mm units with two low-E panes and krypton/argon. For city noise, panes of 6-8 mm gauge can be fitted, lifting acoustic performance toward 45-47 dB.
A single sash can be built up to 1100 mm wide and 2350 mm tall, suiting panoramic apartment windows, cottage glazing and balcony doors. The system tests at Class 4 air permeability and Class 9A watertightness — the top grade of storm-rain protection. Its frame heat retention (Uf) is about 1.2 W/m²K.
It is rated A+ for energy, with a window U-value of Uw ≤ 1.1 W/(m²·K) and resistance (Ro) up to 0.93 m²°C/W. That sits between the 70 mm WDS 7S (Uw ≤ 1.2) and the three-seal WDS 76 MD (Uw ≤ 0.92, rated A++), making it a strong-value warm option without the top-tier price.
Choose a different system if you need maximum thermal or acoustic performance or very large leaves. Consider:
