Flange, Flat, 1 in Nominal Pipe Size, Socket, 4 1/4 in Flange Outside Diameter, 1/2 in Flange Thickness, Schedule 80, Class Class 150, For Pipe Schedule 80, PVC, 150 psi Maximum Operating Pressure, 140 Degrees F, Number of Bolt Holes 4, 3 1/8 in Bolt Circle Diameter, 9/16 in Bolt Hole Diameter, 1 1/4 in Overall Length, Gray