DUCTMATE GRQS4GA Round Connector Sleeve, 4 in Duct Dia, Metal, 24 GA, 4 in W,
$33.19
Connector Sleeve, For Nominal Duct Diameter 4 in, Fabric Material Neoprene, Fold Type Not Applicable, Inlet Diameter 4 in, Product Type Connector Sleeve, Application Commercial, Residential, Overall Length 3 1/2 in, Weight 0.84 lb, Material Steel,...