Dixon® - Carbon Steel Male Adapter, 3 in, Insert x MNPT, Domestic

Dixon® - Male Adapter, 1-1/4 in, Hose Barb x MNPT, 316/316L Stainless Steel, Domestic

Approved Vendors - Male Adapter, 1/2 in, Flare x MNPT, Brass, Rough Brass, Domestic

Approved Vendors - Duct Board Collar With Ring, 10 in, 28 ga

Approved Vendors - Duct Board Collar With Ring, 5 in, 28 ga

Approved Vendors - Duct Board Collar With Ring, 6 in, 28 ga

Approved Vendors - Duct Board Collar With Ring, 7 in, 28 ga

Approved Vendors - Duct Board Collar With Ring, 8 in, 28 ga

Approved Vendors - Duct Board Collar With Ring, 9 in, 28 ga

Approved Vendors - Nipple, 1-1/2 in, 2 in L, 316/316L Stainless Steel, SCH 40/STD