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Heavy duty steel
Height: 14cmInternal Width: 9cmProtrudes 11
The high visibility colour reminds you to remove the cover once the flood water has receded
15 x 12mm ( 1/2 inch )15 x 16mm ( 5/ inch )12 x 20mm ( 3/4 inch )12 x 25mm ( 1 inch )6 x 32mm ( 1 1/4 inch ) Measurement is the tool hole size
Size: 50mm x 50mm
Grey Gravity Flap Air Vent & Back Draught Shutter 4 Inch Travel Kits Heavy duty steelProduct Description Grey Gravity Flap 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. Suitable for round 100mm (4 Inch) ducting. Overall size: 140mm x 140mm. British made. ABS thermoplastic. Complies with Part F building regulations. Suitable for commercial and domestic use.
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