Horizontal Sliding Secondary Glazing
The most versatile system in our range. Two, three or four panels slide effortlessly on twin tracks — perfect for casement primary windows.
Smooth, low-friction operation
Every horizontal slider runs on stainless-steel-bearing wheels and precision-milled aluminium tracks, so the panels glide with one finger even on windows over 2 metres wide.
- Twin-track or triple-track
- Panels lift out for cleaning
- Up to 6.8mm laminated glass
- Suits openings up to 3m wide
Ideal primary window pairings
Best suited to casement, tilt-and-turn, fixed picture and steel-frame primary windows. Also the standard choice for stone-mullioned bay windows where a vertical sash would be too tall.
Glass and thermal upgrades
Standard 4mm toughened. Optional 6.4mm or 6.8mm acoustic laminated for noise, or Low-E soft-coat for warmth. Combined with a 100–150mm cavity, the system delivers up to 80% noise reduction and 65% thermal improvement over single glazing.
- Acoustic laminated glass
- Low-E thermal coating
- Optional obscure/frosted glass
- Trickle vents on request
Ready for a free, no-obligation quote?
South Yorkshire's specialists in secondary glazing — survey, measure, manufacture and install.