Extruded plastics or metal door or window frame - has profiled hollow sections each with hollow protrusion extending from plane of frame

摘要

The frame is partic. for a door or window, comprising extruded hollow plastic or metal profiled sections. These sections (1) each have a hollow protrusion (2) extending far enough from the plane of the frame to bring the overall width of the latter to 80 mm at least. Three or more grooves (6, 7, 8) run in the lengthwise direction in the outside of the frame, and extend nearly to the base surface of the sections, and coupling pieces or profiled accessories can fit in them. These grooves can be spaced apart at regular intervals.