Next Product CONTINUOUS ACTING AIR VENT Login for Pricing size Choose an option2"3"4"Clear SKU: 405743000cmain Category: Vents & Valves Description Additional information Description CONTINUOUS ACTING AIR VENT – STANDARD Additional information size 2", 3", 4" Related products Quick View SKU: 409252800mainSEAL MATIC ELECTRIC ON/OFF VALVE Quick View Vents & Valves Login for Pricing Quick View SKU: 40504200bmainDUCTILE IRON BUTTERFLY VALVE – GEAR OP Quick View Vents & Valves Login for Pricing Quick View SKU: 40500500bmainBUTTERFLY VALVE – GEAR OP Quick View Vents & Valves Login for Pricing