3400 Series Rev B Pressure Relief Vent End-Of-Line; Standard Pallet Design; 2" Inlet Size, Mates With PN16 Flange Connection; Flat Face Derakane 470 Body With Stainless Steel Studs, Derakane 470 Trim And Weatherhood; FEP Pallet Diaphragm; FRP Encapsulated Carbon Steel Weight Material