Gasketed Coupler, Duct Fitting Diameter 5 in, Duct Fitting Length 42 in, Width 5 in, Duct Fitting Material Galvanized Steel, 24 Gauge, Gasketed Coupler, Height 5, Coating Galvanized, W. G. (30 in Positive / 30 in Negitive), Standards SMACNA, Self Sealing, No Fasteners Required, Reusable, Double-Bolt Design, For Use With Round Duct, Light Gauge Tubing or Hoses