Reynaers SL68: The Ultimate Slimline Aluminium Window
Ultra-slim sightlines of traditional steel windows, with the thermal efficiency and security of modern aluminium. Made-to-measure across Windsor, Berkshire and London.
The Aesthetic: Why “SlimLine” Matters
The SL68 features a minimum frame-to-vent width of just 65mm — significantly slimmer than standard uPVC or older aluminium frames. By reducing the visible frame, the SL68 makes the glass the star of the show. It’s a popular replacement for old, draughty steel windows in historic properties, available in Standard, Flush, Heritage, and Classic profiles.
Thermal Efficiency: Key Metrics
Security and Peace of Mind
PAS 24 certified — the industry standard for enhanced security performance, rigorously tested against common methods of forced entry.
Multi-Point Locking
Secures the window at multiple points around the frame.
Hinge-Side Security Brackets
Prevents the vent from being forced open from outside.
Internal Glazing Beads
Glass cannot be removed from the exterior.
Lockable Handles
Available in various styles to suit your interior design.
Built for the British Weather
| Metric | Rating |
|---|---|
| Air Tightness | Class 4 (600Pa) |
| Water Tightness | Class E1200 (1200Pa) |
| Wind Load Resistance | Class C5 (2000Pa) |
| Acoustic Reduction | Up to 47dB with 43mm acoustic glazing |
Versatility in Configuration
The frame depth of 68mm is intentionally designed to sit within existing plaster lines, ideal for replacement projects.
Side-Hung
Top-Hung
Tilt & Turn
Fixed Lights
Is the Reynaers SL68 Right for You?
Period property renovations
Modern extensions
Energy-conscious homeowners
Urban dwellers seeking quiet
Start your project with Inspired Glazing
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