U_W- value 1.1

WDS 76 AD — Evolution in Every Millimeter. This system represents the modern European glazing standard that is gradually replacing the familiar 70-millimeter windows. The additional 6 mm of installation depth (76 mm) provides a huge advantage in structural rigidity and glazing options.

Why choose the 76 mm platform:

Maximum transparency: Thanks to modern geometry, the profile is lower and the light opening is larger. You get 10% more natural light compared to old wide frames.
Ultra-silence: This is the most affordable system in our catalog that can accommodate a 48 mm glass unit. Previously, this option was only available in expensive elite series.
AD System (Arrest Design): Classic configuration with two sealing circuits ensures easy sash closing and simple maintenance (no middle ridge where dust accumulates), while maintaining high airtightness.

The ideal balance of technology and price for glazing modern apartments in Barcelona, Valencia, and Madrid.

Technical Specifications

Details

New European standard. 76 mm system allowing powerful glass units without paying premium prices.

Energy rating

A+

Profile chambers

5 chambers

Profile depth

76mm

Profile height

113mm

Glass unit

up to 48mm

Thermal protection

Uw ≤ 1.1 W/(m²·K)

Sound insulation

≈46 Rw(dB)

System Design Parameters:

Installation depth: 76 mm (increased base for better stability).
Profile construction: 5 chambers with optimized internal geometry for efficient heat distribution.
Outer wall thickness: Class A (according to DSTU/EN) — increased corner joint strength and durability.
Design: Narrow sightlines (low frame+sash combination) allow 5-7% more natural light.
Sealing: 2 circuits of modern durable TPV gasket in black or gray color.
Reinforcement: Square or U-shaped reinforcement from galvanized steel up to 2.0 mm thick.

Glazing Options:

Maximum filling thickness: up to 48 mm.
Recommended glass units: Double-chamber 40 mm or 44 mm units using two energy-saving glasses and krypton/argon.
Sound insulation solutions: Possibility of installing thick glasses of different thicknesses (6-8 mm) for urban noise protection.

Maximum Structure Dimensions:

Maximum sash width: up to 1100 mm.
Maximum sash height: up to 2350 mm.
Application: Panoramic apartment windows, cottage glazing, balcony doors.

Certified Characteristics:

Thermal resistance coefficient (Ro): up to 0.93 m²°C/W.
Profile thermal insulation (Uf): ~1.2 W/m²K.
Sound insulation (Rw): up to 45-47 dB (with appropriate glass unit).
Air permeability: Class 4.
Water tightness: Class 9A (highest level of storm rain protection).

Documentation

WDS 76 MD/AD Technical Catalog

PDF. 0.9Mb

WDS Full Technical Catalog

PDF. 6.3Mb

WDS 76 AD (76 mm)

New European standard. 76 mm system allowing powerful glass units without paying premium prices.

Average market price:

For a standard 2-sash tilt-and-turn window (1200 × 1400 mm) with basic double-glazed unit.

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Comfort Index

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Side by side

Head to Head: Closest Competitors

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

Frequently Asked Questions about WDS 76 AD (76 mm)

What does AD marking mean?

AD (Anschlagdichtung) means a system with two sealing circuits (external and internal). This is a proven classic design that guarantees reliability, easy adjustment, and a more affordable price compared to MD systems (three circuits).

Why do I need 76 mm if there's 70 mm?

76 mm is a more modern platform. With only about 10-15% price difference, you get the ability to install warmer and quieter glass units (48 mm vs 40 mm for 70-series), plus a more rigid frame.

What's the thermal insulation of this window?

Frame heat transfer coefficient Uf is 1.2 W/m²K. When using a good glass unit, the overall Uw value can reach 0.8-0.9, meeting high Spanish energy-saving standards.

Is it difficult to clean these windows?

On the contrary, very easy. Thanks to the AD system (no middle sealing circuit), the frame rebate remains open and smooth — easy to wipe with a cloth, nowhere for dirt to get stuck.

Can doors be made from this profile?

Yes, the WDS 76 AD system has reinforced door sashes, allowing entry groups and terrace doors with high security levels to be manufactured.

How does WDS 76 compare to REHAU Euro 70 or VEKA Softline 70?

WDS 76 AD has increased installation depth (76 mm vs 70 mm), allowing installation of thicker glass units up to 48 mm for better sound insulation. With comparable profile quality, WDS price is 20-30% lower due to optimized logistics from Ukraine. All systems are manufactured to unified European quality standards.