The VELUX Insulation Collar with Underfelt Collar 55 X 78cm is a top-tier, energy-efficient solution designed to enhance the performance of your VELUX roof windows. This product ensures a secure and tight seal between your window and the roof structure, thereby reducing heat loss and improving energy efficiency. It also includes an underfelt collar to create a weather-tight seal and protect against rain. Easy to install, this insulation collar is compatible with all standard VELUX roof windows of corresponding size.

Brand Name	Velux
Protects From	rain
Type	Insulation Collar
Waterproof	Yes
Wear Type	roof window
Provides optimal thermal insulation	Yes
Reduces heat loss for energy efficiency	Yes
Includes an underfelt collar for weatherproofing	Yes
Ensures a tight seal between window and roof structure	Yes
Easy to install with clear instructions	Yes
Compatible with standard VELUX roof windows	Yes