Velux Underfelt Foil Collar For Sun Tunnel

This BFX 0K14 1000 underfelt collar from VELUX creates weather-tight seals between a 14-inch sun tunnel and the roof. With welded corners that ease installation processes and enhance watertight qualities, the underfelt collar is manufactured from a pleated material.

The pleated material aids flexibility and ensures that underfelt and roof seals are tight and secure, regardless of construction. The material is also diffusion open for reducing condensation.