Grey ventilation bar foam for Velux windows 45mm x 4.0mm
New improved version so doesn't crumble like the original. 1m length. 

If you require the genuine Velux foam then see our other listings.

To install: unscrew the locking mechanism arm, remove existing foam, fix the new foam to the handle keeping it close to the front edge leaving a gap at the back, (this will allow the handle to shut tight) Remove the paper protection on the foam and fix the arm back in the same place. (use a bradawl to locate the old screw holes.)