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Eight holes eliminates clogging and aids dust extraction
This variant range allows you to select the configuration that best suits your setup
Once installed
Lightweight and comfortable to hold
Extension Sleeve for Underfloor Adjustable Telescopic Cavity Wall Vents G961 Tile Vents Eight holes eliminates clogging andManthorpe G961 Extension Sleeve Pack of 1 Extension Sleeve 9" x 3" for cavity wall ventilators. 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 of
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