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Ships within 48 hours · Estimated delivery Oct 12 - Oct 17
Channels clip together for easy on-site fabrication
The textured surface helps maintain the aesthetic of the roof while delivering effective ventilation performance
Storage hooks with rubber end caps for protection
Built to Manthorpe’s recognised trade standards
Pack of 288
White Gravity Flap Air Vent & Back Draught Shutter 4 Inch Extractor Fans & Vents Channels clip together for easyProduct Description White Air Vent & Back Draught Shutter For 4 Inch (100mm) Extractor Fan Ducting Gravity Flap Vent Wall vent with gravity flaps and weather sill. 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 commercial and
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