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Regulations & Standards
British made by Manrose
Moulded in mortar key ensures secure adhesion to the building fabric
Air Brick (1201ab) equivalent area 6450mm² per unit
9" x 3" Manthorpe Extendable Combination Cavity Wall Sleeve Vent Cavity Sleeves Regulations & StandardsProduct Description Extendable Cavity Wall Sleeve Vent Menu Options 9" x 3" Inch Ventilation for heating and gas appliances with integral wind baffle. This vent is to increase the airflow in a room to eliminate condensation with this sleeve vent for heat producing appliances. Extends to suit wall thickness of 190mm 335mm. Additional G935 extension sleeves available in menu options. Each pair of extension sleeves adds on a extra 120 280mm. Finished
