Blind Flange, Flat, 1 in Nominal Pipe Size, 4 1/4 in Flange Outside Diameter, 1/2 in Flange Thickness, Schedule 80, Class Class 150, For Pipe Schedule 80, CPVC, 150 psi Maximum Operating Pressure, 32 Degrees to 200 Degrees F, Number of Bolt Holes 4, 3 1/8 in Bolt Circle Diameter, 9/16 in Bolt Hole Diameter, 5/8 in Overall Length, Gray