VELUX Underfelt Collar 55x78cm BFX CK02 1000

Key features

• Weather-tight seal for compatible VELUX roof windows and Sun Tunnels
• Integrated transverse drainage gutter for effective water management
• Suitable for both new build and refurbishment projects
• Engineered for reliable performance in UK roof conditions
• Supports professional, visually consistent roof finish
• Compatible with standard VELUX accessory ranges

Specifications

Product code

BFX CK02 1000

Collar dimensions

550 x 780mm

Type

Underfelt collar with transverse drainage gutter

Application

Compatible VELUX roof windows and Sun Tunnel systems

Material

Aluminium and synthetic components

Installation

Suitable for pitched roofs in new build and refurbishment

Description

The VELUX BFX CK02 1000 Underfelt Collar is engineered to work with compatible VELUX roof window and Sun Tunnel systems. It provides a weather-tight seal and visually consistent roof finish, supporting both new build and refurbishment installations. The integrated transverse drainage gutter directs water away from the window frame, helping to protect against water ingress and supporting long-term performance in typical UK roof conditions. This collar forms part of a complete daylight and ventilation solution for residential properties.