Return Air Plenum(19)
Uses item details. Price when purchased online
BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling $199.99
![BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-36-Plenum-Box-for-36-Linear-Slot-Diffuser-2-Slot-Double-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_e132af03-131c-4155-a42b-2e0be78f00b0.88065a369b6a67c33376fa9cb87790f1.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
Sponsored
$19999
current price $199.99BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling
BUILDMART - 12" Plenum Box for [12" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling $119.99
![BUILDMART - 12" Plenum Box for [12" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-12-Plenum-Box-for-12-Linear-Slot-Diffuser-3-Slot-Triple-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_9f23687f-e407-452f-8a55-cd328db4f5bf.acc20fb0ac995f36c231a20fe1863914.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
Sponsored
$11999
current price $119.99BUILDMART - 12" Plenum Box for [12" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling
BUILDMART - 18" Plenum Box for [18" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling $139.99
![BUILDMART - 18" Plenum Box for [18" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-18-Plenum-Box-for-18-Linear-Slot-Diffuser-3-Slot-Triple-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_f90e7eab-0304-41a0-80c2-d3bb1b5f1c4e.976fc5c65e5c26eaa279a49b8b994187.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
Sponsored
$13999
current price $139.99BUILDMART - 18" Plenum Box for [18" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling
BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - 1 Slot - Single Slot] Premium Insulated Plenum Box for Heating and Cooling $169.99
![BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - 1 Slot - Single Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-36-Plenum-Box-for-36-Linear-Slot-Diffuser-1-Slot-Single-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_eb014e6e-cb07-4604-af78-31c266dbb602.a0c47ac00a56be5a870c1adaed77f32f.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
Sponsored
$16999
current price $169.99BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - 1 Slot - Single Slot] Premium Insulated Plenum Box for Heating and Cooling
Mcdaniel Metals P12.519.7547.5-R8-1-0 - 12 1/2 Inch X 19 3/4 Inch X 48 Inch Long Insulated Sheet Metal Return Air Plenum With 1/2 Inch Flange $146.01

$14601
current price $146.01Mcdaniel Metals P12.519.7547.5-R8-1-0 - 12 1/2 Inch X 19 3/4 Inch X 48 Inch Long Insulated Sheet Metal Return Air Plenum With 1/2 Inch Flange
Mcdaniel Metals 21X20X36RF1/2 - 21 Inch X 20 Inch X 36 Inch Long Insulated Sheet Metal Return Air Plenum With 1/2 Inch Flange $138.54

$13854
current price $138.54Mcdaniel Metals 21X20X36RF1/2 - 21 Inch X 20 Inch X 36 Inch Long Insulated Sheet Metal Return Air Plenum With 1/2 Inch Flange
22X20X23.5 W/Filter Rack Return Air Duct Plenum-26 Gauge, HVAC Duct Work $222.67

$22267
current price $222.6722X20X23.5 W/Filter Rack Return Air Duct Plenum-26 Gauge, HVAC Duct Work
Mcdaniel Metals 16X19.5X36 - 3 Ft R6 Return Plenum (16X19.5X36) $119.67

$11967
current price $119.67Mcdaniel Metals 16X19.5X36 - 3 Ft R6 Return Plenum (16X19.5X36)
43.8 out of 5 Stars. 4 reviews
Mcdaniel Metals P19.87514.548-R8-1-0 - 19 7/8 Inch X 14 1/2 Inch X 48 Inch Long Insulated Sheet Metal Return Air Plenum $164.76

$16476
current price $164.76Mcdaniel Metals P19.87514.548-R8-1-0 - 19 7/8 Inch X 14 1/2 Inch X 48 Inch Long Insulated Sheet Metal Return Air Plenum
13 out of 5 Stars. 1 reviews
Mcdaniel Metals 198/8X245/8X36RF1/2 - 19-5/8 Inch X 24-5/8 Inch X 36 Inch Long Insulated Sheet Metal Return Air Plenum With 1/2 Inch Flange $137.16

$13716
current price $137.16Mcdaniel Metals 198/8X245/8X36RF1/2 - 19-5/8 Inch X 24-5/8 Inch X 36 Inch Long Insulated Sheet Metal Return Air Plenum With 1/2 Inch Flange
BUILDMART - 24" Plenum Box for [24" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling $159.99
![BUILDMART - 24" Plenum Box for [24" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-24-Plenum-Box-for-24-Linear-Slot-Diffuser-3-Slot-Triple-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_b23403a1-a8ca-4714-b2f8-5e812aad3b5a.534a20734c24af143a6f30516270d0af.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
Sponsored
$15999
current price $159.99BUILDMART - 24" Plenum Box for [24" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling
BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling $219.99
![BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-36-Plenum-Box-for-36-Linear-Slot-Diffuser-3-Slot-Triple-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_a4f66fab-7188-4600-b0ea-004c133892de.69d01ae22729d8680f5f12e2c39bc63e.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
Sponsored
$21999
current price $219.99BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling
Mcdaniel Metals 19.5X19.5X36 - 3 Ft R6 Return Plenum (19.5X19.5X36) $118.35

$11835
current price $118.35Mcdaniel Metals 19.5X19.5X36 - 3 Ft R6 Return Plenum (19.5X19.5X36)
13 out of 5 Stars. 1 reviews
Mcdaniel Metals P1619.548-R8-1-0 - 16 Inch X 19 1/2 Inch X 48 Inch Long Insulated Sheet Metal Return Air Plenum $156.62

$15662
current price $156.62Mcdaniel Metals P1619.548-R8-1-0 - 16 Inch X 19 1/2 Inch X 48 Inch Long Insulated Sheet Metal Return Air Plenum
McDaniel Metals 161/4X203/8X36RF1/2 3 Ft R6 Return Plenum 16-1/4 inches x 20-3/8 inches x 36 inches $127.03

$12703
current price $127.03McDaniel Metals 161/4X203/8X36RF1/2 3 Ft R6 Return Plenum 16-1/4 inches x 20-3/8 inches x 36 inches
BUILDMART - 60" Plenum Box for [60" Linear Slot Diffuser - 1 Slot - Single Slot] Premium Insulated Plenum Box for Heating and Cooling $259.99
![BUILDMART - 60" Plenum Box for [60" Linear Slot Diffuser - 1 Slot - Single Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-60-Plenum-Box-for-60-Linear-Slot-Diffuser-1-Slot-Single-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_e4040341-4a11-4a5d-8595-e3c60e636940.bdb367bac4829a68ff6c6bd832e98308.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
Sponsored
$25999
current price $259.99BUILDMART - 60" Plenum Box for [60" Linear Slot Diffuser - 1 Slot - Single Slot] Premium Insulated Plenum Box for Heating and Cooling
BUILDMART - 18" Plenum Box for [18" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling $119.99
![BUILDMART - 18" Plenum Box for [18" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-18-Plenum-Box-for-18-Linear-Slot-Diffuser-2-Slot-Double-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_d399be04-7f0d-4d47-bcd3-1732cea25070.01bce4d8088633641244909e2252f867.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
Sponsored
$11999
current price $119.99BUILDMART - 18" Plenum Box for [18" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling
BUILDMART - 48" Plenum Box for [48" Linear Slot Diffuser - 1 Slot - Single Slot] Premium Insulated Plenum Box for Heating and Cooling $219.99
![BUILDMART - 48" Plenum Box for [48" Linear Slot Diffuser - 1 Slot - Single Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-48-Plenum-Box-for-48-Linear-Slot-Diffuser-1-Slot-Single-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_019a3489-a8ba-472c-abf9-bf54fd6ab19c.c891f3e13975e3b4fcd76dc7b4909558.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
Sponsored
$21999
current price $219.99BUILDMART - 48" Plenum Box for [48" Linear Slot Diffuser - 1 Slot - Single Slot] Premium Insulated Plenum Box for Heating and Cooling
BUILDMART - 60 Plenum Box for [60 Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling $289.99
![BUILDMART - 60 Plenum Box for [60 Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-60-Plenum-Box-for-60-Linear-Slot-Diffuser-2-Slot-Double-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_db839baf-0714-49ce-8ff0-f4cf1ca7ef73.fc69fd740b45988d4997a977635dba2e.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
Sponsored
$28999
current price $289.99BUILDMART - 60 Plenum Box for [60 Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling
Other options to consider(114)
Lot (2)SUPPLY AIR DUCT PLENUM 10.5 X 16 X 36 LONG GALVANIZED STEEL 26 GAUGE $200.96

$20096
current price $200.96Lot (2)SUPPLY AIR DUCT PLENUM 10.5 X 16 X 36 LONG GALVANIZED STEEL 26 GAUGE
BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling $199.99
![BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-36-Plenum-Box-for-36-Linear-Slot-Diffuser-2-Slot-Double-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_e132af03-131c-4155-a42b-2e0be78f00b0.88065a369b6a67c33376fa9cb87790f1.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$19999
current price $199.99BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling
12" Plenum Box for [12" Slot Diffuser - (2 Slot) Double Slot] Premium Insulated Plenum Box for Heating and Cooling - Texas DyGTyX $127.85
![12" Plenum Box for [12" Slot Diffuser - (2 Slot) Double Slot] Premium Insulated Plenum Box for Heating and Cooling - Texas DyGTyX](https://i5.walmartimages.com/seo/12-Plenum-Box-for-12-Slot-Diffuser-2-Slot-Double-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling-Texas-DyGTyX_d3aee600-ba7e-427d-8c7b-a8187e222559.d87ccf3bdd6907bd375988db48f124c7.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$12785
current price $127.8512" Plenum Box for [12" Slot Diffuser - (2 Slot) Double Slot] Premium Insulated Plenum Box for Heating and Cooling - Texas DyGTyX
BUILDMART - 48" Plenum Box for [48" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling $249.99
![BUILDMART - 48" Plenum Box for [48" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-48-Plenum-Box-for-48-Linear-Slot-Diffuser-2-Slot-Double-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_c579243e-b138-4d1e-9a0c-c2c1cbaea2b1.600f3e9491e035eca362568f3342446d.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$24999
current price $249.99BUILDMART - 48" Plenum Box for [48" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling
BUILDMART - 24" Plenum Box for [24" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling $159.99
![BUILDMART - 24" Plenum Box for [24" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-24-Plenum-Box-for-24-Linear-Slot-Diffuser-3-Slot-Triple-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_b23403a1-a8ca-4714-b2f8-5e812aad3b5a.534a20734c24af143a6f30516270d0af.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$15999
current price $159.99BUILDMART - 24" Plenum Box for [24" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling
Achtek AIR RETURN 4"x12" Duct Opening (Overall Size 6"x14") | Heavy Cast Aluminum Air Grille HVAC Duct || Powder Coated From $86.40
From$8640
Achtek AIR RETURN 4"x12" Duct Opening (Overall Size 6"x14") | Heavy Cast Aluminum Air Grille HVAC Duct || Powder Coated
Wall Return Air Pathway - 12x4 inch - HVAC Vent for Balanced Airflow - White - TTI-RAPR12.4 $59.20

$5920
current price $59.20Wall Return Air Pathway - 12x4 inch - HVAC Vent for Balanced Airflow - White - TTI-RAPR12.4
BUILDMART - 48" Plenum Box for [48" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling $279.99
![BUILDMART - 48" Plenum Box for [48" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-48-Plenum-Box-for-48-Linear-Slot-Diffuser-3-Slot-Triple-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_b41b7783-a0f4-488c-9fe4-c5402e55a456.662a1dbe3dfde6b6af6944912c96b693.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$27999
current price $279.99BUILDMART - 48" Plenum Box for [48" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling
BUILDMART - 12" Plenum Box for [12" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling $119.99
![BUILDMART - 12" Plenum Box for [12" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-12-Plenum-Box-for-12-Linear-Slot-Diffuser-3-Slot-Triple-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_9f23687f-e407-452f-8a55-cd328db4f5bf.acc20fb0ac995f36c231a20fe1863914.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$11999
current price $119.99BUILDMART - 12" Plenum Box for [12" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling
Achtek AIR RETURN 16"x18" Duct Opening (Overall Size 18"x20") | Heavy Cast Aluminum Air Grille HVAC Duct || Powder Coated From $416.00
From$41600
Achtek AIR RETURN 16"x18" Duct Opening (Overall Size 18"x20") | Heavy Cast Aluminum Air Grille HVAC Duct || Powder Coated
Achtek AIR RETURN 20"x20" Duct Opening (Overall Size 22"x22") | Heavy Cast Aluminum Air Grille HVAC Duct || Powder Coated From $640.80
From$64080
Achtek AIR RETURN 20"x20" Duct Opening (Overall Size 22"x22") | Heavy Cast Aluminum Air Grille HVAC Duct || Powder Coated
Aaon V52700 - Wheel Plenum for High-Performance HVAC Systems $617.19

$61719
current price $617.19Aaon V52700 - Wheel Plenum for High-Performance HVAC Systems
BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling $219.99
![BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-36-Plenum-Box-for-36-Linear-Slot-Diffuser-3-Slot-Triple-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_a4f66fab-7188-4600-b0ea-004c133892de.69d01ae22729d8680f5f12e2c39bc63e.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$21999
current price $219.99BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling
Achtek AIR RETURN 20"x25" Duct Opening (Overall Size 22"x27") | Heavy Cast Aluminum Air Grille HVAC Duct || Powder Coated
Achtek AIR RETURN 20"x25" Duct Opening (Overall Size 22"x27") | Heavy Cast Aluminum Air Grille HVAC Duct || Powder Coated
Imperial Mfg RG0690 Return Air Floor Grill, Brown $27.75 Was $39.17

Now$2775
current price Now $27.75, Was $39.17$39.17
Imperial Mfg RG0690 Return Air Floor Grill, Brown
BUILDMART - 18" Plenum Box for [18" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling $139.99
![BUILDMART - 18" Plenum Box for [18" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-18-Plenum-Box-for-18-Linear-Slot-Diffuser-3-Slot-Triple-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_f90e7eab-0304-41a0-80c2-d3bb1b5f1c4e.976fc5c65e5c26eaa279a49b8b994187.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$13999
current price $139.99BUILDMART - 18" Plenum Box for [18" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling
Achtek AIR RETURN 20"x30" Duct Opening (Overall Size 22"x32") | Heavy Cast Aluminum Air Grille HVAC Duct || Powder Coated From $610.80
From$61080
Achtek AIR RETURN 20"x30" Duct Opening (Overall Size 22"x32") | Heavy Cast Aluminum Air Grille HVAC Duct || Powder Coated
Tru Aire 4 in. H X 10 in. W 1-Way Powder Coat White Steel Return Air Grille $12.31 Was $36.32

Now$1231
current price Now $12.31, Was $36.32$36.32
Tru Aire 4 in. H X 10 in. W 1-Way Powder Coat White Steel Return Air Grille
Plenum Box for [ Slot Diffuser - (2 Slot) Double Slot] Premium Insulated Plenum Box for Heating and Cooling - Texas
![Plenum Box for [ Slot Diffuser - (2 Slot) Double Slot] Premium Insulated Plenum Box for Heating and Cooling - Texas](https://i5.walmartimages.com/seo/Plenum-Box-for-Slot-Diffuser-2-Slot-Double-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling-Texas_b9fe8470-1cb1-4329-8649-6fa869ccc20e.d7a5e3f1f68c988c864a05d6cde52f49.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
Plenum Box for [ Slot Diffuser - (2 Slot) Double Slot] Premium Insulated Plenum Box for Heating and Cooling - Texas
BUILDMART - 18" Plenum Box for [18" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling $119.99
![BUILDMART - 18" Plenum Box for [18" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-18-Plenum-Box-for-18-Linear-Slot-Diffuser-2-Slot-Double-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_d399be04-7f0d-4d47-bcd3-1732cea25070.01bce4d8088633641244909e2252f867.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$11999
current price $119.99BUILDMART - 18" Plenum Box for [18" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling
Achtek AIR RETURN 12"x26" Duct Opening (Overall Size 14"x28") | Heavy Cast Aluminum Air Grille HVAC Duct || Powder Coated From $398.88

2 options
Available in additional 2 optionsFrom$39888
Achtek AIR RETURN 12"x26" Duct Opening (Overall Size 14"x28") | Heavy Cast Aluminum Air Grille HVAC Duct || Powder Coated
Tru Aire 4 in. H X 12 in. W 1-Way Powder Coat White Steel Return Air Grille $8.99 Was $25.86

Now$899
current price Now $8.99, Was $25.86$25.86
Tru Aire 4 in. H X 12 in. W 1-Way Powder Coat White Steel Return Air Grille
Ducane (by Lennox International) Air Handler 3.5 Ton R410 or R454 Upflow Downflow Horizontal $1,898.00

$1,89800
current price $1,898.00Ducane (by Lennox International) Air Handler 3.5 Ton R410 or R454 Upflow Downflow Horizontal
BUILDMART - 60" Plenum Box for [60" Linear Slot Diffuser - 1 Slot - Single Slot] Premium Insulated Plenum Box for Heating and Cooling $259.99
![BUILDMART - 60" Plenum Box for [60" Linear Slot Diffuser - 1 Slot - Single Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-60-Plenum-Box-for-60-Linear-Slot-Diffuser-1-Slot-Single-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_e4040341-4a11-4a5d-8595-e3c60e636940.bdb367bac4829a68ff6c6bd832e98308.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$25999
current price $259.99BUILDMART - 60" Plenum Box for [60" Linear Slot Diffuser - 1 Slot - Single Slot] Premium Insulated Plenum Box for Heating and Cooling
Achtek AIR RETURN 8"x30" Duct Opening (Overall Size 10"x32") | Heavy Cast Aluminum Air Grille HVAC Duct || Powder Coated From $282.00
From$28200
Achtek AIR RETURN 8"x30" Duct Opening (Overall Size 10"x32") | Heavy Cast Aluminum Air Grille HVAC Duct || Powder Coated
ZORO SELECT 4MJP2 Return Air Grille , 24 X 24 , White , Steel $37.04 Was $41.96

Now$3704
current price Now $37.04, Was $41.96$41.96
ZORO SELECT 4MJP2 Return Air Grille , 24 X 24 , White , Steel
215 out of 5 Stars. 21 reviews
BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - 1 Slot - Single Slot] Premium Insulated Plenum Box for Heating and Cooling $169.99
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current price $169.99BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - 1 Slot - Single Slot] Premium Insulated Plenum Box for Heating and Cooling
BUILDMART - 60 Plenum Box for [60 Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling $289.99
![BUILDMART - 60 Plenum Box for [60 Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling](https://i5.walmartimages.com/seo/BUILDMART-60-Plenum-Box-for-60-Linear-Slot-Diffuser-2-Slot-Double-Slot-Premium-Insulated-Plenum-Box-for-Heating-and-Cooling_db839baf-0714-49ce-8ff0-f4cf1ca7ef73.fc69fd740b45988d4997a977635dba2e.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$28999
current price $289.99BUILDMART - 60 Plenum Box for [60 Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box for Heating and Cooling
Achtek AIR RETURN 14"x30" Duct Opening (Overall Size 16"x32") | Heavy Cast Aluminum Air Grille HVAC Duct || Powder Coated From $466.80
From$46680
Achtek AIR RETURN 14"x30" Duct Opening (Overall Size 16"x32") | Heavy Cast Aluminum Air Grille HVAC Duct || Powder Coated
11 out of 5 Stars. 1 reviews
Tru Aire 12 in. H X 24 in. W 1-Way Powder Coat White Steel Return Air Grille From $32.99

5 options
Available in additional 5 optionsFrom$3299
Tru Aire 12 in. H X 24 in. W 1-Way Powder Coat White Steel Return Air Grille
15 out of 5 Stars. 1 reviews
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