Rigid Ducts, For Nominal Duct Diameter 4 in, Inside Diameter 4 in, Overall Length 60 in, Product Type Rigid Duct, Weight 29 lb, Material Steel, Material Thickness 26 ga, Maximum Pressure Rating 2 in wc, Maximum Temperature Rating 212 Degrees F, Shape Straight, End Type Crimped/Plain, Standards ASTM A653 and A924, SMACNA Seal Class A, Seal Material EPDM, Co-Polymer, Color Black, Maximum Airflow Not Applicable, Connection Type Press Fit, Minimum Temperature Rating -40 Degrees F, Finish Galvanized GreenSeam+(TM) snap pipe is self-sealing duct for commercial and residential applications. Engineered with a LEED(R) qualifying zero-VOC gasket; eliminates additional sealing along the longitudinal seams and transverse joint. When used with Ductmate sealed fittings (sold separately), GreenSeam(R) sy.