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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14" x 14" x 10" Duct Wye Branch Galvanized Single Wall
$99.00Sheet metal branch tee wye diverts air to a secondary duct from the main line. 45 degree branch provides efficient air distribution. Crimped on outflow end for easy attachment to metal pipe. Use with...SHMTYS26141410$99.00 -
4" 45 Degree Saddle Tap Branch - HVAC Ductwork Sheet Metal
$30.99FREE SHIPPING to Continental US | 45 degree duct saddle tap adds a branch from existing metal duct runs. Use with flexible duct or vent pipe for take-off air. Curved flange wraps around existing...SHMST426P$30.99 -
3" X 3" X 3" Duct Wye Branch Galvanized Single Wall
$27.00Sheet metal branch tee wye diverts air to a secondary duct from the main line. 45 degree branch provides efficient air distribution. Crimped on outflow end for easy attachment to metal pipe. Use with...SHMTYS30M$27.00 -
14" X 36" Snap Lock Pipe - HVAC Ductwork Sheet Metal
$85.99FREE SHIPPING Snap Lock Pipe is ideal for retrofit and new install of HVAC duct systems. Ships unsnapped to fit through tight spaces. Snap it together when ready to install. Seal and fasten together...SHMKD261403$85.99 -
8" 45 Degree Saddle Tap Branch - HVAC Ductwork Sheet Metal
$57.99FREE SHIPPING to Continental US | 45 degree duct saddle tap adds a branch from existing metal duct runs. Use with flexible duct or vent pipe for take-off air. Curved flange wraps around existing...SHMST426X$57.99 -
12" x 12" x 12" Duct Wye Branch Galvanized Single Wall
$89.00Sheet metal branch tee wye diverts air to a secondary duct from the main line. 45 degree branch provides efficient air distribution. Crimped on outflow end for easy attachment to metal pipe. Use with...SHMTYS3012$89.00 -
6" x 6" x 4" Duct Wye Branch Galvanized Single Wall
$36.00Sheet metal branch tee wye diverts air to a secondary duct from the main line. 45 degree branch provides efficient air distribution. Crimped on outflow end for easy attachment to metal pipe. Use with...SHMTYS30UUP$36.00 -
14 X 14 X 14 Ceiling Register Box
$43.99FREE SHIPPING to Continental US | Ceiling box for air register connect to round HVAC supply ductwork. Last dimension is round connection size. Sheet metal will come in 30 gauge or better. If you need...SHMCB3014PG$43.99 -
16 X 8 X 8 Wall Air Register Box
$65.99FREE SHIPPING to Continental US - Wall or floor box for air register connect to round HVAC supply ductwork. Last dimension is round connection size. Sheet metal will come in 30 gauge or better. If...SHMFB2816XX$65.99 -
10" x 10" x 8" Duct Wye Branch Galvanized Single Wall
$68.00Sheet metal branch tee wye diverts air to a secondary duct from the main line. 45 degree branch provides efficient air distribution. Crimped on outflow end for easy attachment to metal pipe. Use with...SHMTYS301010X$68.00 -
24 X 24 Return Air Box Can HVAC Plenum
$92.99Free Shipping to Continental US | Return air box is a plenum for attaching return duct to return grille in ceiling or floor. Use with start collar and return filter frame to provide return air flow...SHMRAC630PGS2424$92.99 -
25 X 20 Return Air Box Can HVAC Plenum
$87.99Free Shipping to Continental US | Return air box is a plenum for attaching return duct to return grille in ceiling or floor. Use with start collar and return filter frame to provide return air flow...SHMRAC630PGS2520$87.99