Window casing frame mounting device and installing procedure for such a frame in a wall opening

摘要

Holder (201) positions the window frame (401) in the wall opening (403) with the aid of a fixing element whose two noses clamp onto the frame profile when the holder is twisted round. A spring (203) sits between the fixing element on one side and wall opening on the other when the frame is installed in place. The leaf spring itself is twice angled (208,209) and is secured to one side of a bearer element to whose second side the fixing element is made fast.