Multi-part door and or window frame has inner, insulating and outer layers, with connectors, and is made of wood, plastic, metal and derived timber.

摘要

The multi-part door and or window frame (1,2) has frame parts possessing at least three layers forming an inner (3,8), insulating (4,9) and outer (5,11) frames made of various materials such as wood, derived timber products plastic and or metal. The insulating frame is made of material on a wood or rigid plastic foam basic with greater thermal insulation. Between the insulating frame and or inner frame or attached frame are detachable connectors (7) accessible from the end sides of the frames only when the casement or leaf-frame is open.