1¼" Universal Outlet Air flow capacity of 0.5 l/s For full information on Air Admittance Valves please see below 0 0 Brand:McAlpine Manufacturer Stock Code:VP15M EAN Code:5036484005830 Length:80 mm Width:140 mm Height:260 mm Weight:0.31 kg Manufacturer Guarantee:10 years Sub-Category:Valves Colour:Grey Brand:McAlpine Pack Size:1 Diameter (Inches):1.25 Category:Fittings