Casement windows English single-framed casement windows (opening outwards) make it possible to develop a larger space inside the room without worrying about the place needed for the movement of windows opening inwards. We produce 4 versions of casement windows: with 79 mm thick frame on friction hinges with 95 mm thick frame on braided hinges and IPA bolts with 95 mm thick frame on GU CONTURA hinges and ROTO bolts with 113 mm thick frame on MACO hinges and bolts profile thickness 79 mm profile thickness 95 mm profile thickness 113 mm