SPECIFICATIONS CONTINUEDPressure/Vacuum Vent3/4" HEX6 1/2"Vent Stack Adapter3 1/4"2 5/8" HEX2" NPTVent Cap3/4" HEX3 3/16"5"2" PIPEIn-Line Vault2" NPT11 1/2"2" NPT8 3/8"154