UW- value 1.6

WDS SL 60 — The perfect solution for Spanish balconies and loggias (Galerías). Where a casement window "eats up" useful space, a sliding system is indispensable. Sashes move parallel to each other, not interfering with clotheslines, cabinets, or flowers on the windowsill.

Why it's better than regular aluminum:

  • Warmer to touch: PVC has low thermal conductivity. In winter, the frame doesn't freeze, and in summer, it doesn't heat up from the sun like cheap aluminum "sliders."
  • Silence: Plastic absorbs vibrations. The sound of rain or wind will no longer resonate throughout the apartment.
  • Dust protection: The system is equipped with quality felt sealing (Filspiece) and special plugs (filing pieces) at sash joints, creating a reliable barrier against city dust and wind.

The best choice for glazing cold zones, summer verandas, or separating kitchen and laundry areas.

Technical Specifications

Details

Space savings. Sliding PVC system that's warmer and quieter than old aluminum.

Energy rating
B
System type
Classic (Sliding)
Profile depth
60 mm
Chambers
3 chambers
Glass unit
up to 18 mm
Thermal protection
Uw ≤ 1.6 W/(m²·K)
Sound insulation
≈30 dB

System Design Parameters:

  • Installation depth: 60 mm (2-track) / 106 mm (3-track).
  • Number of chambers: 3 chambers.
  • Opening type: Parallel-sliding.
  • Sealing: Brush seal with special inserts for dust and noise protection.

Maximum Dimensions:

  • Maximum sash size: 1500 mm x 1500 mm (window) / 1600 mm x 2300 mm (door).
  • Maximum sash weight: up to 100 kg.

Glazing:

  • Filling thickness: up to 18-20 mm (single glass or single-chamber glass unit).

Documentation

WDS SL 60 Technical Catalog
WDS SL 60 Technical Catalog
PDF. 18.0Mb
WDS SL 60 Technical Booklet
WDS SL 60 Technical Booklet
PDF. 11.9Mb

WDS SL60

Space savings. Sliding PVC system that's warmer and quieter than old aluminum.

Average market price:

For a 2-panel sliding system (3000 × 2200 mm) with basic double-glazed unit.

Calculate your window
Comfort Index
Heat insulation
3/10
Noise insulation
1/10

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Side by side

Head to Head: Closest Competitors

How WDS SL60 stacks up against the closest matches from other brands.

SpecificationWDS SL60This profileRehau High-Design SlideKömmerling PremiLineCortizo C 70
BrandWDSREHAUKömmerlingCortizo
MaterialPVCPVCPVCPVC
Profile depth60 mm—80 mm (frame)—
Chambers3 chambers———
Glass unit, maxup to 18 mmup to 24mmup to 28 mmup to 28 mm
Thermal (Uw)1.61.5≤ 1.3≤ 1.3
Sound (Rw, dB)≈30 dB—≈ 34 Rw(dB)≈ 34 dB

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FAQs

Frequently Asked Questions about WDS SL60

How airtight is this system?

Sliding systems use brush sealing (felt), not rubber pressure sealing. They excellently protect against rain and wind but don't provide 100% airtightness like casement windows. For living rooms, WDS 76 is better; SL 60 is ideal for balconies.

Can a glass unit be installed?

Yes, the system is designed for 4-6 mm glass or 18 mm single-chamber glass unit installation. We recommend glass units — they significantly reduce street noise.

How many sashes can be made?

We can manufacture 2, 3, 4, or even 6-sash constructions. Opening schemes are possible where all sashes slide to one side, opening 2/3 of the opening.

Are the rollers reliable?

We use reinforced rollers with polymer coating. They ensure smooth and quiet sash movement for years without wearing down the aluminum rail.