Blind Flange Flat 2 1/2 in Nominal Pipe Size Flanged 7 in Flange Outside Diameter 3/4 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 5 1/2 in Bolt Circle Diameter 11/16 in Bolt Hole Diameter 15/16 in Overall Length Gray