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Ships within 48 hours · Estimated delivery Aug 4 - Aug 9
When bent into an angle: 35mm x 35mm
Integral nest concave provides ideal starting point for nest building
Instructions Included
side lights and indicator lights
Designed to cover the opening of a 9" x 3" airbrick
Brown Louvre Extractor Air Vent & Back Draught Shutter 4 Inch Screws and Fixings When bent into an angle:Product Description Brown Air Vent & Back Draught Shutter For 4 Inch (100mm) Extractor Fan Ducting Louvre Vent Louvre wall vent with 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 domestic use. Other
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