VP100E McAlpine Int/Ext Air Admittance Valve for 110mm Pipe Black

McAlpine VP100E Ventapipe 100 Internal /External with dual-fit synthetic rubber finger seal outlet for 4"/110mm pipe Dual fit synthetic rubber finger seal outlet A1 rated Air flow capacity of 40 l/s Incorporates a stainless steel mesh in the air intake Complies with BS EN 12380:2002 McAlpine recommend that Air Admittance Valves be installed internally within the building.