Imperial SU
IMPERIAL SU is a three-chamber window system with thermal insulation designed for windows with hidden sash, invisible from the outside.
The system features specially designed shape of the frame hiding the full height of sash profile.
The hidden sash system is preferred by designers, as it allows “hiding” windows in aluminium and glass structure; thanks to the application of this solution, openable and fixed window constructions look identical from the outside.
Product specification
- system with thermal inserts
- 3 chambers
- depth of frame 65 mm
- depth of sash 68 mm
- glazing range 4-51 mm
- better insulated variants i, i+
- turn-and-tilt, turn, tilt windows
- rounded or rectangular glazing bars
| SYSTEM | THERMAL INSULATION UF* | AIR PERMEABILITY | WINDLOAD RESISTANCE | WATERTIGHTNESS |
| IP SU | Uf from 1,63 W/m2K | Class 4; EN 12207 | Class C5/B5; EN 12210 | Class E1200; EN 12208 |
| IP SU i | Uf from 1,27 W/m2K | Class 4; EN 12207 | Class C5/B5; EN 12210 | Class E1200; EN 12208 |
Technical drawings
