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The slate grey finish blends cleanly with a wide range of roof tiles
Size: 125mm
‘THE BUILDING REGULATIONS ‘Conservation of fuel and power’ APPROVED DOCUMENT L1A & L2A (2013 Edition)
Storage hooks with rubber end caps for protection
Provides a neat and attractive finish for rounded ridge tiles
White Gravity Flap Air Vent & Back Draught Shutter 4 Inch Extractor Fans & Vents The slate grey finish blendsProduct 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