3400 Series Rev B Pressure Relief Vent End-Of-Line; Standard Pallet Design; 8" Inlet Size, Mates With Standard ASME 150# Flanged Connection; Flat Face Derakane 470 Body W/Hast C. Studs;, Derakane 470 Trim, Derakane 470 Weatherhood; FEP Pallet Diaphragm; FRP Encapsulated Carbon Steel Weight Material