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.
-
3-Foot Snap-Lock Duct Pipe
-
45 Degree Duct Saddle Taps
-
5-Foot Snap-Lock Duct Pipe
-
Adjustable 90° Duct Elbows
-
Ceiling Register Boxes
-
Disc Dampers with Hardware
-
Duct Reducers
-
Evaporative Cooler Ductwork
-
Flexible Duct Connectors
-
Return Air Boxes
-
Roof Pipe Flashings
-
Round Duct End Caps
-
Side-Outlet Ceiling Register Boxes
-
Start Collars
-
T-Wye Duct Fittings
-
Wall & Floor Register Boxes
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
Free Shipping
10 in. 45° Round Duct Saddle Tap, Sheet Metal Branch
$64.99Add a 10 in. 45° takeoff branch to a compatible round metal duct run with this sheet metal saddle tap.Nominal branch diameter: 10 in.Curved flange follows the main duct surfaceConnects a new branch...$64.99 -
Free Shipping
6 in. Tabbed Round Duct Start Collar, Snap-Together Sheet Metal
$10.99Add a 6 in. round duct takeoff with this tabbed, snap-together sheet metal start collar.Nominal duct size: 6 in.Tabbed mounting edgeSnap-together constructionConfirm opening size and the...$10.99 -
Free Shipping
14 in. Round Duct Disc Damper with Hardware
$21.99Control airflow in a 14 in. round metal supply duct with this disc damper and hardware.Nominal duct diameter: 14 in.Disc sets the opening angle inside the ductHardware included as listedVerify duct...$21.99 -
Free Shipping
14 x 10 in. Round Sheet Metal Duct Reducer
$44.99Connect two different round duct sizes with this 14 x 10 in. sheet metal reducer.Nominal connection sizes: 14 in. and 10 in.For transitioning between compatible round HVAC ductsConfirm both...$44.99 -
Free Shipping
18 in. Round Duct Disc Damper with Hardware
$26.99Control airflow in a 18 in. round metal supply duct with this disc damper and hardware.Nominal duct diameter: 18 in.Disc sets the opening angle inside the ductHardware included as listedVerify duct...$26.99 -
Free Shipping
12 x 12 in. Return Air Box Plenum for Grille
$45.99This 12 x 12 in. return air box forms a plenum behind a compatible return grille.Nominal face size: 12 x 12 in.For a ceiling or floor return installationPair with a suitable start collar and return...$45.99 -
Free Shipping
8 x 6 x 6 in. Wall or Floor Register Box, 6 in. Round Duct Connection
$29.99Connect a 8 x 6 in. register opening to 6 in. round HVAC supply duct with this wall or floor register box.Register opening: 8 x 6 in.Round duct connection: 6 in.Sheet metal register bootMeasure the...$29.99 -
Free Shipping
20 x 18 in. Round Sheet Metal Duct Reducer
$71.99Connect two different round duct sizes with this 20 x 18 in. sheet metal reducer.Nominal connection sizes: 20 in. and 18 in.For transitioning between compatible round HVAC ductsConfirm both...$71.99 -
Free Shipping
4 x 3 x 3 in. Galvanized Duct T-Wye, 45° Branch
$30.00This 4 x 3 x 3 in. sheet metal T-wye adds a 45° branch to a round HVAC duct run.Nominal openings: 4 in. x 3 in. x 3 in.Crimped outlet for joining compatible metal pipeUsed to branch air to another...$30.00 -
Free Shipping
5 in. Round Sheet Metal Flexible Duct Connector
$14.99Join a 5 in. flexible duct run to compatible sheet metal ductwork with this round connector.Nominal connection size: 5 in.Sheet metal fitting for a flexible duct connectionConfirm the connector...$14.99 -
Free Shipping
10 x 9 in. Round Sheet Metal Duct Reducer
$27.99Connect two different round duct sizes with this 10 x 9 in. sheet metal reducer.Nominal connection sizes: 10 in. and 9 in.For transitioning between compatible round HVAC ductsConfirm both connection...$27.99 -
Free Shipping
16 in. Round Duct Disc Damper with Hardware
$23.99Control airflow in a 16 in. round metal supply duct with this disc damper and hardware.Nominal duct diameter: 16 in.Disc sets the opening angle inside the ductHardware included as listedVerify duct...$23.99