Extension Sleeve for Underfloor Adjustable Telescopic Vents G961 Ironmongery When bent into an angle:

When bent into an angle: 35mm x 35mm

British made by Manrose

Clear Tunnel Weep Vents

Polished Brass Double Coat Hooks

ABS thermoplastic

Extension Sleeve for Underfloor Adjustable Telescopic Vents G961 Ironmongery When bent into an angle:Product Description Manthorpe G961 Extension Sleeve Pack of 1 Extension sleeve for telescopic vents. Part number: G961. Can be used for vertical or rear horizontal extension. Designed to be used with G960 Manthorpe telescopic vents. Each unit extends the under floor ventilator a further 150mm vertically or 185mm horizontally. Further extension can be added. Provides a maximum equivalent area of 6600mm airflow. Meets NHBC requirements for the control