The system IMPERIAL is designed for windows, doors and constructions with high thermal insulation parameters This system allows for constructing windows with visible or hidden sash (Imperial SU) or windows tilting and turning out (Imperial OUT). 

The windows can also be installed in façade systems. 

The system is available in better insulated variants Imperial i and Imperial i+.

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.

The system IMPERIAL OUT is designed for windows turning and tilting out. It is fully compatible with window system Imperial (they share system elements: couplings, gaskets, glazing bars). It features flush internal surface of the frame and the sash. 

The system Imperial OUT is available in the variant with improved thermal insulation power. 

Available options: IP OUTi with additional, peripheral thermal insulation, at the rebate; IP-OUT i+ with additional thermal insulation between thermal spacers.