End Cap, For Nominal Duct Diameter 8 in, Inlet Diameter 8 in, Material Steel, Overall Length 2 in, Product Type End Cap, Material Thickness 24 ga, Maximum Pressure Rating 3 in wc, Standards ASTM A653 and A924, SMACNA, Finish Galvanized, Overall Height 2 in, Shape Cap, Connection Type Press Fit, Overall Width 8 in, Minimum Pressure Rating 3 in wc For use with GreenSeam+(TM) snap pipe (sold separately), a self-sealing duct for commercial and residential applications. Pipe is engineered with a LEED(R) qualifying zero-VOC gasket; eliminates additional sealing along the longitudinal seams and transverse joint. When fitting is used with GreenSeam(R) pipe, the design can reduce energy costs and increase overall system efficiency.