Weldbend® Weld Neck Flange, Flat Face, 4 in Nominal, 4.03 in Inside Dia, 0.88 in Thickness, 7-1/2 in Bolt Circle, 8 Bolt Holes, 3/4 in, 9 in Outside Dia, 285 psig, 150 lb, -20 to 100 deg F, 5.31 in Hub Dia, 2.94 in Length Through Hub, Forged Carbon Steel, 4-1/2 in Dia Weld, Domestic