Outlet fits 4"/110mm inside diameter of PVC-U and cast iron soil pipe 97-107mm Inlet suits all pan spigots Independent tests prove conclusively that there is no build-up of sediment in the flex Enables easy installation of WC pans in awkward situations With 1¼" Universal Vent Boss Brand:McAlpine Manufacturer Stock Code:WC-F23RV EAN Code:5036484006219 Length:250 mm Width:80 mm Height:40 mm Diameter:310 mm Weight:0.0545 kg Manufacturer Guarantee:10 years Sub-Category:Pan Connectors Colour:White Brand:McAlpine Pack Size:1 Category:Fittings