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Curved: 200mm x 175mm
Equivalent area tested to BS EN13141-1:2004
UK application type 5 BS AU 152
Manufactured to BS EN ISO 9001 : 2008Satisfies all NHBC Standards 2008 EditionComplies with all relevant Building RegulationsMeets all relevant British Standards
9" x 9" Extendable Combination Cavity Wall Sleeve Vent with Buff Air Bricks Ironmongery Curved: 200mm x 175mmExtendable Cavity Wall Sleeve Vent Buff Air Bricks 9" x 9" 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 our shop. Finished with 9" x 9" louvre vent for internally and air brick for externally.