U_W- value 1.3

WDS 6S — a new level of comfort accessible to everyone. If the 5S series is a basic solution, then 6S is an investment in your home's microclimate. The 70 mm installation width and 6 air chambers provide thermal insulation that exceeds Spanish building codes (CTE) for most climate zones.

Why pay 15-20% more compared to basic windows?

Silence: The ability to install a wide glass unit (40 mm) allows using "triplex" acoustic glass. You'll forget about highway noise and city nightlife.
Cool in summer: 6 chambers work like a thermos, keeping air conditioning cool inside. This reduces electricity bills by 30%.
Aesthetics: Elegant 30° beveled edges and glossy surface make the window modern and easy to clean.

This is the choice of pragmatic homeowners who want premium-segment characteristics (like German brands) but aren't willing to overpay for a famous name.

Technical Specifications

Details

Gold standard of glazing. 6-chamber 70mm system with improved sound insulation.

Energy rating

Profile chambers

6 chambers

Profile depth

70mm

Profile height

113mm

Glass unit

up to 40mm

Thermal protection

Uw ≤ 1.3 W/(m²·K)

Sound insulation

≈40 Rw(dB)

System Design Parameters:

Installation depth: 70 mm.
Profile construction: 6 chambers (high level of thermal insulation for a profile of this width).
Outer wall thickness: Class B (compliant with DSTU B V.2.7-130:2007).
Frame/sash height: Optimized profile height to increase the light opening.
Sealing: 2 circuits of modern TPV gasket, providing tight compression even at low temperatures.
Reinforcement: Steel profile with thickness 1.2–2.0 mm (depending on dimensions), ensuring resistance to wind loads.

Glazing Options:

Maximum filling thickness: up to 40 mm.
Filling types: Energy-saving double-chamber glass units (standard 32 mm or 40 mm) using argon and low-E glass.
Glazing bead: Designer beveled bead giving the window a modern look.

Maximum Structure Dimensions:

Maximum sash width: up to 1000 mm (window) / up to 900 mm (balcony door).
Maximum sash height: up to 2300 mm (with reinforced reinforcement).

Certified Characteristics:

Thermal resistance coefficient (Ro): up to 0.89 m²°C/W (exceeds state standards for the first climate zone).
Profile thermal insulation (Uf): ~1.2 W/m²K.
Sound insulation (Rw): up to 34-36 dB (effective urban noise reduction).
Burglar resistance: Possibility of installing anti-burglary hardware and strike plates in steel reinforcement profile.

Documentation

WDS Technical Booklet

PDF. 1.8Mb

Full Technical Catalog

PDF. 6.3Mb

WDS 6S (70 mm)

Gold standard of glazing. 6-chamber 70mm system with improved sound insulation.

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 6S (70 mm) stacks up against the closest matches from other brands.

Specification	WDS 6S (70 mm)This profile	Rehau Euro-design 70	Veka Softline 70	Schüco Corona CT 70
Brand	WDS	REHAU	VEKA	Schüco
Material	PVC	PVC	PVC	PVC
Profile depth	70mm	70mm	70mm	70mm
Chambers	6 chambers	5 chambers	5 chambers	5 chambers
Glass unit, max	up to 40mm	up to 40mm	up to 42mm	up to 52mm
Thermal (Uw)	1.3	1.3	1.3	1.3
Sound (Rw, dB)	≈40 Rw(dB)	≈43 Rw(dB)	≈45 Rw(dB)	≈48 Rw(dB)

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FAQs

Frequently Asked Questions about WDS 6S (70 mm)

What's the main difference between WDS 6S and cheaper WDS 5S?

The main difference is width (70 mm vs 60 mm) and chamber count (6 vs 5). WDS 6S is significantly warmer and allows for thicker, quieter glass units (40 mm). The price difference is small, but comfort is noticeably higher. We recommend 6S for living rooms and bedrooms.

Is this window suitable for subsidies (Plan Renove)?

Yes. Thanks to high thermal resistance, WDS 6S profile windows combined with energy-saving glass typically qualify for tax deductions and housing renovation subsidies in Spain.

Won't the profile turn yellow in the sun?

No. We use calcium-zinc (CaZn) stabilizers resistant to UV radiation. The glossy surface doesn't absorb dirt and remains snow-white for decades.

What hardware can be installed?

The profile has a standard eurogroove (13 mm), allowing installation of any quality hardware: Roto, Siegenia, Maco, or Axor. We can also install RC2 class anti-burglar hardware.

Do these windows fog up?

With proper installation and ventilation — no. The 6-chamber frame structure is so warm that the inner profile surface always stays at room temperature, preventing condensation on the plastic.

Can I order a colored window instead of white?

Yes, WDS 6S profile is available in a wide lamination palette: wood finishes (golden oak, walnut, mahogany), as well as solid colors (anthracite, gray, black). Lamination can be single-sided (exterior) or double-sided. Manufacturing time for colored windows increases by 5-7 days.