The WDS 5S window system (60 mm) is proof that a well-built window need not carry a high price tag. It's the perfect pick for anyone looking for a dependable option for rental flats, balcony enclosures (terrazas), holiday homes, or seafront properties in Spain (Alicante, Malaga, Valencia).
A sensible pick for any renovation where every centimeter counts (installation depth is just 60 mm) and keeping the budget in check matters — all without sacrificing airtightness or sound insulation.
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
Lowest price. A 5-chamber 60mm system for glazing cottages, balconies and utility spaces.
Engineering Specifications:
Glass Filling Choices:
Largest Build Sizes:
Tested Performance:
Documentation
Lowest price. A 5-chamber 60mm system for glazing cottages, balconies and utility spaces.
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 5S stacks up against the closest matches from other brands.
| Specification | WDS 5SThis profile | Rehau Euro-design 70 | Veka Softline 70 | Schüco Corona CT 70 |
|---|---|---|---|---|
| Brand | WDS | REHAU | VEKA | Schüco |
| Material | PVC | PVC | PVC | PVC |
| Profile depth | 60mm | 70mm | 70mm | 70mm |
| Chambers | 5 chambers | 5 chambers | 5 chambers | 5 chambers |
| Glass unit, max | up to 32mm | up to 40mm | up to 42mm | up to 52mm |
| Thermal (Uw) | 1.4 | 1.3 | 1.3 | 1.3 |
| Sound (Rw, dB) | ≈38 Rw(dB) | ≈43 Rw(dB) | ≈45 Rw(dB) | ≈48 Rw(dB) |
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FAQs
The WDS 5S is a 60 mm deep PVC frame split into 5 chambers for trapping insulating air. Rigidity comes from a U-shaped steel insert, 1.2–1.5 mm thick, that locks the geometry in place. The frame height is 107 mm, and weather sealing uses 2 contours of TPV gasket in gray or black to keep out drafts, dust and moisture.
The 60 mm depth limits glazing to a maximum 32 mm bead opening. Available infills:
It is rated energy class B with a whole-window Uw ≤ 1.4 W/(m²·K) and a profile Uf of roughly 1.5 W/m²K. Heat resistance (Ro) is about 0.80–0.82 m²°C/W bare, dropping to ~0.63–0.65 m²°C/W once the steel reinforcement is fitted. That suits warm and mild climates rather than the coldest northern zones.
Keep sashes within 800–900 mm wide and up to 2100 mm tall, with the upper height depending on the steel insert chosen. Larger or heavier openings need a deeper system. Tested ratings are air-leakage Class 4 (EN 12207) and watertightness Class 7A/8A (EN 12208), so very high wind-load exposure is better served by a 70 mm or 76 mm WDS profile.
The 5S is the entry point at 60 mm / 5 chambers / Uw ≤ 1.4 / class B. Stepping up:
Yes. With a 32 mm double-chamber unit you can specify acoustic laminated glass, and the profile reaches roughly 32–34 dB Rw of noise damping. That is enough for typical residential streets, but for the busiest urban frontages a deeper sibling such as the WDS 7S (≈42 dB) or WDS 8S (≈48 dB) gives a meaningfully quieter result.
