ProSource Floor Flange, Nominal Size: 1-1/2 in, FIP Connection, Flange Diameter: 4.6 in, Bolt Hole Diameter: 0.31 inch (8 mm), Number of Bolt Holes: 4, Length Through Bore: 0.89 in, Face Type: With Bolt Holes, Maximum Pressure: 300 psi, Operating Temperature: -4 to 572 deg F