Add On Frame Extender

A frame extender allows to increase the thickness of your window/door at any side. Great for properties with deep plaster, render or tiles over tiles. 10mm, 20mm and 50mm extensions available.

Some fitters buy extenders as a precaution, for example where the window opening has not been built yet. Extenders can be modified to accommodate inconsistent side walls.

Extenders simply clip or slide on the window profile