Metal Duct Fittings
Shop galvanized metal HVAC duct fittings and round duct pipe for residential and light-commercial heating, air-conditioning, ventilation and evaporative-cooling systems. Available products include snap-lock pipe, adjustable elbows, reducers, start collars, T-wye fittings, saddle taps, dampers, end caps, register boxes, return-air boxes and flexible-duct connectors.
Use metal duct fittings to build straight runs, change direction, transition between duct sizes, create branch lines and connect ductwork to registers, grilles and HVAC equipment. Many fittings are designed for use with round galvanized pipe or insulated flexible duct.
Before ordering, confirm the duct diameter, fitting dimensions, crimped or non-crimped connection orientation and the intended airflow direction. Sheet-metal products may have sharp edges; wear appropriate gloves during handling and installation. Seal and mechanically secure duct connections according to applicable installation requirements.
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3-Foot Snap-Lock Duct Pipe
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45 Degree Duct Saddle Taps
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5-Foot Snap-Lock Duct Pipe
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Adjustable 90° Duct Elbows
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Ceiling Register Boxes
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Disc Dampers with Hardware
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Duct Reducers
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Evaporative Cooler Ductwork
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Flexible Duct Connectors
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Return Air Boxes
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Roof Pipe Flashings
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Round Duct End Caps
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Side-Outlet Ceiling Register Boxes
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Start Collars
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T-Wye Duct Fittings
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Wall & Floor Register Boxes
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8 in. Round Duct Disc Damper with Hardware
$16.99Control airflow in a 8 in. round metal supply duct with this disc damper and hardware.Nominal duct diameter: 8 in.Disc sets the opening angle inside the ductHardware included as listedVerify duct...$16.99 -
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14 in. Round Sheet Metal Duct End Cap
$34.99Close the end of an unused 14 in. round duct run with this sheet metal end cap.Nominal duct size: 14 in.For terminating compatible round ductworkCheck whether the cap fits inside or over your duct...$34.99 -
18 in. Multi-Pitch Evaporative Cooler Roof Jack with Slide Damper
$141.59Route air through the roof with this 18 in. multi-pitch evaporative cooler roof jack.Nominal duct size: 18 in.Listed for flat through 6/12 roof pitchesSliding damper included; slot for optional...$141.59 -
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20 x 12 in. Return Air Box Plenum for Grille
$56.99This 20 x 12 in. return air box forms a plenum behind a compatible return grille.Nominal face size: 20 x 12 in.For a ceiling or floor return installationPair with a suitable start collar and return...$56.99 -
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10 x 10 x 8 in. Ceiling Register Box, 8 in. Round Duct Connection
$31.99Connect a 10 x 10 in. register opening to 8 in. round HVAC supply duct with this ceiling register box.Register opening: 10 x 10 in.Round duct connection: 8 in.Sheet metal register bootMeasure the...$31.99 -
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20 in. Adjustable 90 Round Sheet Metal Duct Elbow
$157.99Turn a 20 in. round HVAC duct run with this adjustable sheet metal elbow.Nominal diameter: 20 in.Adjusts from straight to a 90° bendSegmented 26-gauge steel, as listedSet the angle for your layout,...$157.99 -
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12 x 12 x 8 in. Ceiling Register Box, 8 in. Round Duct Connection
$34.99Connect a 12 x 12 in. register opening to 8 in. round HVAC supply duct with this ceiling register box.Register opening: 12 x 12 in.Round duct connection: 8 in.Sheet metal register bootMeasure the...$34.99 -
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10 x 8 x 6 in. Galvanized Duct T-Wye, 45° Branch
$68.00This 10 x 8 x 6 in. sheet metal T-wye adds a 45° branch to a round HVAC duct run.Nominal openings: 10 in. x 8 in. x 6 in.Crimped outlet for joining compatible metal pipeUsed to branch air to another...$68.00 -
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12 in. Round Duct Disc Damper with Hardware
$18.99Control airflow in a 12 in. round metal supply duct with this disc damper and hardware.Nominal duct diameter: 12 in.Disc sets the opening angle inside the ductHardware included as listedVerify duct...$18.99 -
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12 x 12 x 9 in. Ceiling Register Box, 9 in. Round Duct Connection
$34.99Connect a 12 x 12 in. register opening to 9 in. round HVAC supply duct with this ceiling register box.Register opening: 12 x 12 in.Round duct connection: 9 in.Sheet metal register bootMeasure the...$34.99 -
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10 x 7 in. Round Sheet Metal Duct Reducer
$27.99Connect two different round duct sizes with this 10 x 7 in. sheet metal reducer.Nominal connection sizes: 10 in. and 7 in.For transitioning between compatible round HVAC ductsConfirm both connection...$27.99 -
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18 in. Round Sheet Metal Duct End Cap
$56.99Close the end of an unused 18 in. round duct run with this sheet metal end cap.Nominal duct size: 18 in.For terminating compatible round ductworkCheck whether the cap fits inside or over your duct...$56.99