Blind Flange Raised Face 2 1/2 in Nominal Pipe Size Flanged x Blind 7 in Flange Outside Diameter 13/16 in Flange Thickness Steel Anodized Class Class 150 For Pipe Schedule 40 150 psi Maximum Operating Pressure -29 Degrees to 425 Degrees F Number of Bolt Holes 4 3/4 in Bolt Circle Diameter 5/8 in Bolt Hole Diameter