4-track sliding window with add-on 4-track extension
- Sliding in-line
- Option: 4 glazed sashes with 75% clear opening
- Aluminium trac
- Alu interlock to increase meeting rail rigidity
- 162 mm frame depth
- Max. frame height 6’
- Max. frame width 10’ (Sizes for 4 pane @ 2500 Pa)
- Max. sash weight 50 kg
- 4 to 22 mm glazing
