Flange Flat 2 in Nominal Pipe Size Socket 6 in Flange Outside Diameter 11/16 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 4 3/4 in Bolt Circle Diameter 11/16 in Bolt Hole Diameter 1 11/16 in Overall Length Gray