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Osma is a trusted plastic drainage brand, providing a complete range of residential and commercial plastic drainage systems. Whether you’re installing for a domestic or commercial project, you’ll find Osma guttering and above and below ground drainage solutions here at Wolseley to fit your needs. The Osma drainage range includes waste pipes and fittings, connectors and downpipes, and guttering systems.

Register a trade account with Wolseley for free next-day delivery to your home or site on all orders or opt for click and collect from your local branch – whichever is more convenient.