PNH-44 Size: 4" Features: -Coupling.-Gaskets are made from an elastomeric compound that meets the requirements of ASTM C564.-No hub.-Size 1.5": 2" H x 2.5" W x 2.75" D.-Size 2-3": 2.25" H x 3.75" W x 4.5" D.-Size 4": 3" H x 5" W x 5.5" D. Assembly Instructions: -5/16" Hex head screw applies 60" lbs of installation torque to the band and shield assembly.