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Ships within 48 hours · Estimated delivery Aug 9 - Aug 14
Interior and exterior use
Finished with 9" x 9" louvre vent for internally and air brick for externally
Discreet solution to the problems of flood damage caused by unprotected airbricks
Other size vents and vent packs available
Allows a 3-5 course stagger
Brown Hooded Cowl Extractor Air Vent & Back Draught Shutter 4 Inch access_doors_panels Interior and exterior useProduct Description Brown Hooded Cowl Vent & Back Draught Shutter For 4 Inch (100mm) Extractor Fan Ducting Hooded Cowl Vent Hooded Wall vent with internal back draught shutter. Helps prevent backdrafts. Manufactured with UV stable materials to reduce colour fade. Dual fitting for round 100mm (4 Inch) ducting or square ducting. Overall size: 140mm x 140mm. British made. ABS thermoplastic. Complies with Part F building regulations. Suitable for
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