- Universal size for use with FAKRO FX fixed skylights in sizes 48" x 27" and 48" x 46"
- For use with flat roofing material up to 5/16" such as shingles, plain-tile, double-lap roofing and slates
- Saves energy by preventing heat loss in the winter and cool air loss in the summer
- Recommended for use in Energy Star zones 1 through 3 (i.e. Canada)