The Velux Single Window Insulation and Felt Collar BDX MK04 is designed to provide enhanced insulation and weather protection for your Velux windows. This grey polypropylene insulation collar ensures a seamless fit and improved energy efficiency.

Product Features:

• Brand: Velux
• Product Type: Insulation and Underfelt Collar
• Series: BDX
• Material: Polypropylene
• Configuration: Single
• Size: 780 x 980 mm

The Velux BDX insulation collar provides optimal insulation and a tight seal, helping to reduce drafts and energy loss.