HVAC Ductwork
Shop HVAC ductwork and installation supplies for residential and light-commercial heating, air-conditioning and evaporative-cooling systems. Our selection includes insulated flexible duct, galvanized sheet-metal duct fittings, round duct pipe, elbows, reducers, start collars, T-wye fittings, register boxes, return-air boxes and related installation materials.
Use Flexible Duct for insulated supply and return-air runs, or browse Metal Duct Fittings for components used to connect, transition, branch and terminate an HVAC duct system. Duct tape, cable ties and related fasteners are also available for securing compatible connections.
Before ordering, verify the duct diameter, fitting dimensions, connection type, insulation rating and available installation space. HVAC duct sizing affects airflow and system performance, so ductwork should be selected and installed according to the equipment requirements and applicable building codes.
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7 x 7 x 7 in. Galvanized Duct T-Wye, 45° Branch
$39.00This 7 x 7 x 7 in. sheet metal T-wye adds a 45° branch to a round HVAC duct run.Nominal openings: 7 in. x 7 in. x 7 in.Crimped outlet for joining compatible metal pipeUsed to branch air to another...$39.00 -
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10 x 10 x 8 in. Galvanized Duct T-Wye, 45° Branch
$68.00This 10 x 10 x 8 in. sheet metal T-wye adds a 45° branch to a round HVAC duct run.Nominal openings: 10 in. x 10 in. x 8 in.Crimped outlet for joining compatible metal pipeUsed to branch air to...$68.00 -
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12 x 12 x 8 in. Galvanized Duct T-Wye, 45° Branch
$89.00This 12 x 12 x 8 in. sheet metal T-wye adds a 45° branch to a round HVAC duct run.Nominal openings: 12 in. x 12 in. x 8 in.Crimped outlet for joining compatible metal pipeUsed to branch air to...$89.00 -
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20 x 16 in. Return Air Box Plenum for Grille
$67.99This 20 x 16 in. return air box forms a plenum behind a compatible return grille.Nominal face size: 20 x 16 in.For a ceiling or floor return installationPair with a suitable start collar and return...$67.99 -
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12 x 12 x 10 in. Ceiling Register Box, 10 in. Round Duct Connection
$34.99Connect a 12 x 12 in. register opening to 10 in. round HVAC supply duct with this ceiling register box.Register opening: 12 x 12 in.Round duct connection: 10 in.Sheet metal register bootMeasure the...$34.99 -
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10 x 10 x 8 in. Side-Outlet Ceiling Register Box, 8 in. Round Duct Connection
$66.99Connect a 10 x 10 in. register opening to 8 in. round HVAC supply duct with this side-outlet ceiling register box.Register opening: 10 x 10 in.Round duct connection: 8 in.Side outletMeasure the...$66.99 -
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8 x 8 x 8 in. Ceiling Register Box, 8 in. Round Duct Connection
$28.99Connect a 8 x 8 in. register opening to 8 in. round HVAC supply duct with this ceiling register box.Register opening: 8 x 8 in.Round duct connection: 8 in.Sheet metal register bootMeasure the...$28.99 -
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7 in. x 25 ft. Insulated Flexible HVAC Duct, R-8
$150.76Run insulated supply or return air duct with this 7 in. diameter x 25 ft. flexible duct rated R-8.Insulation rating: R-8Nominal length: 25 ft.Nominal duct diameter: 7 in.Confirm the required...$150.76 -
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6 in. x 25 ft. Insulated Flexible HVAC Duct, R-8
$140.41Run insulated supply or return air duct with this 6 in. diameter x 25 ft. flexible duct rated R-8.Insulation rating: R-8Nominal length: 25 ft.Nominal duct diameter: 6 in.Confirm the required...$140.41 -
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8 x 8 x 8 in. Side-Outlet Ceiling Register Box, 8 in. Round Duct Connection
$42.99Connect a 8 x 8 in. register opening to 8 in. round HVAC supply duct with this side-outlet ceiling register box.Register opening: 8 x 8 in.Round duct connection: 8 in.Side outletMeasure the register...$42.99 -
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10 in. Round Duct Disc Damper with Hardware
$17.99Control airflow in a 10 in. round metal supply duct with this disc damper and hardware.Nominal duct diameter: 10 in.Disc sets the opening angle inside the ductHardware included as listedVerify duct...$17.99 -
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14 x 14 x 12 in. Ceiling Register Box, 12 in. Round Duct Connection
$43.99Connect a 14 x 14 in. register opening to 12 in. round HVAC supply duct with this ceiling register box.Register opening: 14 x 14 in.Round duct connection: 12 in.Sheet metal register bootMeasure the...$43.99