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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18 X 14 Vent Pipe Reducer - HVAC Ductwork Sheet Metal
$62.99FREE SHIPPING to Continental US - Sheet metal will come in 30 gauge or better. If you need a specific gauge, please call to place your order. Sheet metal is designed for rough in ductwork and is not...SHMSFT261814$62.99 -
8" x 6" x 6" Duct Wye Branch Galvanized Single Wall
$49.00Sheet 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...SHMTYS30XUU$49.00 -
10 X 6 Vent Pipe Reducer - HVAC Ductwork Sheet Metal
$27.99FREE SHIPPING to Continental US - Sheet metal will come in 30 gauge or better. If you need a specific gauge, please call to place your order. Sheet metal is designed for rough in ductwork and is not...SHMSFT3010U$27.99 -
10" x 8" 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...SHMTYS3010XX$68.00 -
14 X 6 X 6 Wall Air Register Box
$43.99FREE 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...SHMFB3014UU$43.99 -
$108.99Qty in Cart: 0Price:$108.99Subtotal: -
8" Disk Damper w/Hardware - HVAC Ductwork Sheet Metal
$16.99FREE SHIPPING to Continental US | Use in round sheet metal ductwork to limit flow of supply air. Affix inside duct at desired angle and fasten for permanent air dampening.Sheet metal will come in 30...SHMDD30X$16.99 -
Silver Film Mylar Duct Tape 181 2 in. x 120 yd. DC-181 181B-FX
$17.99Color matches foil backed flex duct High-tack, cold temperature acrylic adhesive Conforms well to irregularly shaped surfaces Easy to unwind and tear Quick stickSDC181K120SI 181B-FXSDC181K120SI$17.99Qty in Cart: 0Price:$17.99Subtotal: -
18" Multi-Pitch Swamp Cooler Roof Jack 78317
$141.59Adjustable roof jack ducts air from evap cooler to roof penetration. Flat to 6/12 pitch roof. Ships with sliding "cookie sheet" damper. Has slot for barometric automatic damper.78317$141.59 -
10X10X8 Ceiling Register Box
$31.99FREE 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...SHMCB301010XPG$31.99 -
14" Round End Cap - HVAC Ductwork Sheet Metal
$34.99FREE SHIPPING to Continental US | Round duct end cap closes off unused portions of round duct. Use with duct tape to terminate old ductwork runs in flexible duct or round metal duct. Sheet metal...SHMREC2814$34.99 -
20 X 12 Return Air Box Can HVAC Plenum
$56.99Free 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...SHMRAC630PGS2012$56.99