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On roofs with rafter spacings of between 400mm and 600mm25mm2 continuous airflow
Ideal for:
Adapter converts to a round opening that can be attached to a soil stack
6 x Screws
Fits quickly and easily without preparation
White Louvre Extractor Air Vent & Back Draught Shutter 4 Inch Weep Vents On roofs with rafter spacingsProduct Description White 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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