We produce aluminium windows and doors that can be used in conservatories, partition walls or as ordinary windows and doors. System provides to mount ferrules. Usually we use three-chamber profiles with thermal break. The system has several variants of door sash: with "the kick" (wide beam), or sash sawn at an angle of 45 degrees, with no doorstep or with doorstep. To doors we can apply ferrule Roto Patio. Patio is a ferrules system for sliding doors and windows for comfort and safety. Due to the carriageable constructions and the mechanism of imposed control even large and heavy sashs do not make the problem while opening. To windows we can apply ferrule HAU-TAU. This system is used to open and close the window elements beyond the reach of the user. With hand lever moving rod up or down succeed by operation the scissor-opening mechanism (opening or closing). The system allows to make smoke-resistant construction.