100mm Rigid Ducting

21 products

Browse our range of 100mm rigid ducting for bathroom extractor fans, en-suite ventilation and small kitchen extract systems. 100mm (4 inch) is the standard duct diameter for most domestic extractor fans, making it the most popular size for residential ventilation projects.

Our rigid round ducting delivers better airflow than flexible alternatives — less resistance means your fan performs closer to its rated extraction rate, keeping your home properly ventilated. We stock straight lengths, bends, connectors, reducers and wall plates from trusted brands including Domus and Systemair.

All fittings are push-fit for easy installation without specialist tools. Whether you're running duct through a loft space, along a ceiling void or through an external wall, rigid PVC ducting gives you a clean, permanent installation that won't sag or kink over time. Need help choosing the right components? Our ventilation specialists are here to help — call or email for free expert advice. Fast UK delivery available on all orders, with trade accounts for regular buyers.

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