Ensure optimal ventilation and prevent sewer gas backflow with the Wavin OsmaSoil 4S304W Air Admittance Valve 110mm White. Designed for reliable performance and easy installation in your plumbing system.
Ensure effective ventilation while preventing debris entry with the Wavin OsmaSoil 4S310G SW/S Vent Cowl Grey. Designed for durability and easy installation in your plumbing system.