WDS Door 76 Sash — The peak of door evolution. This is a designer system with a hidden sash (flush-bonded sash technology). Where ordinary doors leave the plastic profile visible around the panel, here the decorative panel fully wraps the sash on the outside.
Why architects favor this system:
- Aluminum aesthetics: You get the fashionable monolithic look — no visible seams or transitions, just like costly aluminum doors — but at PVC prices.
- Thermal insulation Ud = 0.7: Since the panel overlays the profile, the overall insulation thickness grows and thermal bridges vanish. This door officially qualifies for certified Passive House construction.
- Rigidity: The panel isn't merely inserted but bonded to the sash, becoming part of the load-bearing structure. That rules out sagging even at huge door sizes.
The perfect choice for modern villas in hi-tech and minimalist styles.
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
Details
The flagship line with "aluminum-look" styling. The panel conceals the sash to create a perfectly flush surface.
Engineering Specifications:
- Mounting depth: 76 mm (a wider base for top stability).
- Chamber layout: 5 chambers across frame and sash (tuned for heat retention).
- Gasket system: Optional middle sealing contour (MD) that makes the door a dependable shield against drafts and damp.
- Steel insert: Dedicated closed steel frame of larger cross-section (2.0 mm thickness), keeping the structure steady even in extreme temperatures.
- Sill: Low aluminum threshold with a thermal insert (thermal break) that removes the "cold bridge" and freezing along the bottom of the opening.
- Load capacity: The wider sash profile lets you build massive doors for busy passage areas.
Glazing and Infill Choices:
- Top filling thickness: up to 48 mm.
- Filling variants: Extra-thick double-chamber energy-saving glass units, armored glass (triplex) or designer HPL panels with high thermal insulation values.
Largest Sash Sizes:
- Top sash width: up to 1100 mm (single-leaf) / up to 1900 mm (double-leaf with mullion).
- Top sash height: up to 2400 mm.
- Leaf weight: up to 140-160 kg (owing to reinforced hinges and profile depth).
Tested Performance:
- Heat resistance value (Ro): up to 0.95–1.0 m²°C/W (varies with infill and whether the middle seal is present).
- Noise damping (Rw): up to 40-42 dB.
- Break-in resistance: Works with RC2 class hardware and can take anti-burglar locks with 5 pressure points.
- Air leakage: Class 4 (top airtightness grade).
WDS Door 76
The flagship line with "aluminum-look" styling. The panel conceals the sash to create a perfectly flush surface.
For a standard entrance door (900 × 2100 mm) with a mid-range filling panel.
Compare with Similar Profiles
Alternative solutions from other manufacturers
WDS Door 70
WDS Door 76
Rehau Euro-Design 70 Door
Rehau Brillant-Design 70 Door
Rehau Synego 80 Door
Side by side
Head to Head: Closest Competitors
How WDS Door 76 stacks up against the closest matches from other brands.
| Specification | WDS Door 76This profile | Rehau Synego 80 Door | Kömmerling 88 Puerta | Veka Softline 82 Door |
|---|---|---|---|---|
| Brand | WDS | REHAU | Kömmerling | VEKA |
| Material | PVC | PVC | PVC | PVC |
| Profile depth | — | 80mm | 88 mm | 82 mm |
| Chambers | 5 chambers | 7 chambers | 7 chambers | 7 chambers |
| Glass unit, max | Panel 60 mm | up to 51mm | up to 56 mm | Panel / up to 52mm |
| Thermal (Uw) | 1.0 | 0.90 | ≤ 0.9 | 1.1 |
| Sound (Rw, dB) | ≈ 42 Rw(dB) | ≈ 46 Rw(dB) | ≈ 48 Rw(dB) | ≈ 44 Rw(dB) |
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FAQs
Frequently Asked Questions about WDS Door 76
How does the bonded sash construction of this WDS Door 76 differ structurally from the standard version?
On this variant the door panel is bonded onto the OUTSIDE of the 76 mm sash so the profile is hidden entirely, creating a perfectly flush, "aluminum-look" surface. The wider sash profile also lets you build massive leaves for busy passage areas. The result is stiffer and warmer than a standard inset panel where the plastic edge stays visible.
What are the exact thermal and structural specs behind this hidden-sash WDS Door 76?
- Mounting depth 76 mm with a 5-chamber frame-and-sash layout
- Uw ≤ 1.0 W/(m²·K), energy rating A++, heat resistance Ro up to 0.95–1.0 m²°C/W
- Closed steel insert of larger cross-section, 2.0 mm thick, plus optional middle (MD) sealing contour and Class 4 airtightness
Which panel and glazing infills can this design door's sash accept?
The sash takes top fillings up to 48 mm thick. Choices include extra-thick double-chamber energy-saving glass units, armored triplex glass, or designer HPL panels with high thermal insulation. The signature option is the 60 mm bonded panel that overlays the profile for the fully flush, hi-tech finish.
What are the largest leaf sizes and weights this WDS Door 76 sash can carry?
The reinforced sash supports leaf widths up to 1100 mm single-leaf, or up to 1900 mm double-leaf with a mullion, and heights up to 2400 mm. Thanks to reinforced hinges and the deep profile, leaf weight can reach 140–160 kg, suiting the massive doors needed for busy passage areas.
What security level should I NOT expect from this hi-tech WDS Door 76?
This design-focused door is built around RC2-class hardware with concealed hinges and anti-burglar locks offering 5 pressure points. It does not reach the higher RC3 rating offered by the standard WDS Door 76. If maximum break-in resistance outranks the flush look, choose the standard version instead.
How does this flush-sash door compare by the numbers to other WDS doors?
- WDS Door 60: 60 mm, 3 chambers, Uw ≤ 1.5, ≈34 dB, multipoint lock
- WDS Door 70: 70 mm, 4 chambers, Uw ≤ 1.3, ≈38 dB, RC2
- Standard WDS Door 76: 76 mm, Uw ≤ 1.1, RC2/RC3









