3½" (3.1/2") / 90mm x 1¼" (1.1/4") Pipe Mechanical Cast Iron Soil Pipe Boss Connector (Black) - BOSS90CAST-BL
3½" (3.1/2")/90mm x 1¼" (1.1/4") Pipe Black Mechanical Cast Iron Soil Pipe Boss Connector for 22m drill size hole. Suppled with Fixing Tool. Size: 1¼" (1.1/4") Standard: BS 6798:2009 and Building Regulations Approved Document H Please Note: Pipe Boss Connector allows condensate discharge from condensing boiler to be discharged via cast iron soil pipe