Flashing EDLS is for installation of a 3in1 roof window. The VELUX Pro+ flashing set (EDLS 2000) includes the BFX underfelt collar for a weatherproof installation and and the BDX insulation collar for added insulation.
Benefits
Use original VELUX flashing sets for an efficient installation and superior result
Ensure full weatherproofing with underfelt collar BFX
Reduce heat loss and eliminate cold bridges with insulation collar BDX