VELUX BFX 1000 Underfelt Collar
- Underfelt Collar
- BFX 1000
- Welded corners
- Includes transverse gutter
BFX - Underfelt collar
- Ensures a weather-tight seal between the roof window and the roof.
- Pleated material ensures a flexible and tight seal to the underfelt of the roof, whatever it's construction.
- Made from diffusion open material to minimise the risk of condensation.
- Comes with transverse drainage gutter to lead water away from the head of the window if a tile or slate is broken above the window.
- Welded corners ensure a watertight and simple installation.