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$209.99
BUILDMART - 36" Plenum Box For [36" Linear Slot Diffuser - (2 Slot) Double Slot] Premium Insulated Galvanized Sheet Metal Plenum Box For Heating And
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Alpine AH 18CD KIT8 Concealed Duct Return Kit For (One Return, 14 Inch Duct)
Alpine Home Air Products
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Alpine Home Air Products
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Alpine Blueridge 24CD KIT1 Concealed Duct Return Kit For (Three Returns, 10 Inch Ducts)
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Alpine Home Air Products
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BUILDMART - 24" Plenum Box For [24" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box For Heating And Cooling - Texas Buildmart
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HVAC Premium 20'' X 18 Steel Return Air Filter Grille For 1'' Filter - Fixed Hinged - Ceiling Recommended - HVAC Duct Cover - Flat Stamped Face -
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IMPERIAL Fiberglass Duct Plenum | GVL0267
Lowe's
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IMPERIAL Fiberglass Duct Plenum | GVL0267
Lowe's
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12" X 20" Steel Return Air Filter Grille For 1" Filter - Easy Plastic Tabs For Removable Face/Door - HVAC Duct Cover - Flat Stamped Face -White [Outer
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Linear Slot Diffusers
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Return Air Grille: Perforated Grille, White, Powder Coated, Steel, 23 3/4 in H, 23 3/4 in W, Ceiling Model: 4MJV6
Grainger
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Return Air Grille: Perforated Grille, White, Powder Coated, Steel, 23 3/4 in H, 23 3/4 in W, Ceiling Model: 4MJV6
Grainger
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HVAC Premium 24" X 24" Steel Return Air Filter Grille For 1" Filter - Removable Face/Door - HVAC Duct Cover - Flat Stamped Face - Black [Outer
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22X20x23.5 W/Filter Rack Return Air Duct Plenum-26 Gauge, Hvac Duct Work
Walmart
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22X20x23.5 W/Filter Rack Return Air Duct Plenum-26 Gauge, Hvac Duct Work
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Alpine Blueridge 24-36CD KIT2 Concealed Duct Return Kit For (Four Returns, 10 Inch Ducts)
Alpine Home Air Products
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Alpine Blueridge 24-36CD KIT2 Concealed Duct Return Kit For (Four Returns, 10 Inch Ducts)
Alpine Home Air Products
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SOUTHWARK METAL SBF36 Return Air Duct Plenum 26 Ga 36 Inch
Voomi Supply
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SOUTHWARK METAL SBF36 Return Air Duct Plenum 26 Ga 36 Inch
Voomi Supply
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Oxbox Heat Pump Return Plenum
eFireplaceStore
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eFireplaceStore
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Achtek 8"X14" Duct (10"X16" Overall Size) Solid Cast Aluminum HVAC Air Return Grill Vent Cover | Powder Coated | For Floor-Black Without Screw Holes
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Achtek 8"X14" Duct (10"X16" Overall Size) Solid Cast Aluminum HVAC Air Return Grill Vent Cover | Powder Coated | For Floor-Black Without Screw Holes
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21"X39"X12" Tall Furnace Stand Return Air Box Duct Hvac
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21"X39"X12" Tall Furnace Stand Return Air Box Duct Hvac
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MCDANIEL METALS INC Return Air Filter Plenum Box RAFP-20X25
DkHardware.com
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MCDANIEL METALS INC Return Air Filter Plenum Box RAFP-20X25
DkHardware.com
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21.25X21.25X35 1/2 W/Filter Rack Return Air Duct Plenum26 Gauge, HVAC Duct Work
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21.25X21.25X35 1/2 W/Filter Rack Return Air Duct Plenum26 Gauge, HVAC Duct Work
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HVAC Premium 16" X 20" Aluminum Return Grille - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 17.875 X 21.875]
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HVAC Premium 16" X 20" Aluminum Return Grille - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 17.875 X 21.875]
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HVAC Premium 12 X 12 Duct Opening Steel Return Air Filter Grille, For 1-Inch Filter, Removable Door, Flat Stamped HVAC Vent Cover Grille, Outer
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HVAC Premium 12 X 12 Duct Opening Steel Return Air Filter Grille, For 1-Inch Filter, Removable Door, Flat Stamped HVAC Vent Cover Grille, Outer
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$209.84
SOUTHWARK METAL 810EC Return Air Package | Dual Duct Sizes 20X10/20X16 | Reliable Airflow
Voomi Supply
$209.84
SOUTHWARK METAL 810EC Return Air Package | Dual Duct Sizes 20X10/20X16 | Reliable Airflow
Voomi Supply
$170.02
MCDANIEL METALS INC 3 ft R6 Return Plenum 2325X145/2X36R6
DkHardware.com
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MCDANIEL METALS INC 3 ft R6 Return Plenum 2325X145/2X36R6
DkHardware.com
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$179.10
Mcdaniel Metals 19X15X36RF1/2 19 Inch X 15 Inch X 36 Inch Long Insulated Sheet Metal Return Air Plenum With 1/2 Inch Flange
Voomi Supply
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Mcdaniel Metals 19X15X36RF1/2 19 Inch X 15 Inch X 36 Inch Long Insulated Sheet Metal Return Air Plenum With 1/2 Inch Flange
Voomi Supply
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HVAC Premium 18 X 30 Duct Opening Steel Return Air Filter Grille, For 1-Inch Filter, Removable Door, Flat Stamped HVAC Vent Cover Grille, Outer
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HVAC Premium 18 X 30 Duct Opening Steel Return Air Filter Grille, For 1-Inch Filter, Removable Door, Flat Stamped HVAC Vent Cover Grille, Outer
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Winchester Galvanized Steel | WKDP20
Lowe's
11
$216.96
Winchester Galvanized Steel | WKDP20
Lowe's
11
HVAC Return Air Ducting is Important - Lots is Better - AsktheBuilder.com
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What is Plenum in HVAC and Why It is so Important - PICKHVAC
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4 Types of HVAC Plenums (Basics & Applications) - aircondlounge
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Return Air Grille Sizing Guide: CFM Chart & Calculation - aircondlounge
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$130.44
HVAC Premium 20'' X 18 Steel Return Air Filter Grille For 1'' Filter - Fixed Hinged - Ceiling Recommended - HVAC Duct Cover - Flat Stamped Face -
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HVAC Premium 26" X 18" [Duct Opening] Flat Stamped Steel Return Air Grille - Sidewall And Ceiling - HVAC Vent Duct Cover - White [Outer Dimensions:
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BUILDMART - 18" Plenum Box For [18" Linear Slot Diffuser - 1 Slot - Single Slot] Premium Insulated Plenum Box For Heating And Cooling - Texas Buildmart
Linear Slot Diffusers
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BUILDMART - 18" Plenum Box For [18" Linear Slot Diffuser - 1 Slot - Single Slot] Premium Insulated Plenum Box For Heating And Cooling - Texas Buildmart
Linear Slot Diffusers
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IMPERIAL Fiberglass Duct Plenum | GVL0267
Lowe's
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IMPERIAL Fiberglass Duct Plenum | GVL0267
Lowe's
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12" X 20" Steel Return Air Filter Grille For 1" Filter - Easy Plastic Tabs For Removable Face/Door - HVAC Duct Cover - Flat Stamped Face -White [Outer
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12" X 20" Steel Return Air Filter Grille For 1" Filter - Easy Plastic Tabs For Removable Face/Door - HVAC Duct Cover - Flat Stamped Face -White [Outer
Amazon.com
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Linear Slot Diffusers
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Return Air Grille: Perforated Grille, White, Powder Coated, Steel, 23 3/4 in H, 23 3/4 in W, Ceiling Model: 4MJV6
Grainger
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Return Air Grille: Perforated Grille, White, Powder Coated, Steel, 23 3/4 in H, 23 3/4 in W, Ceiling Model: 4MJV6
Grainger
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HVAC Premium 24" X 24" Steel Return Air Filter Grille For 1" Filter - Removable Face/Door - HVAC Duct Cover - Flat Stamped Face - Black [Outer
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HVAC Premium 24" X 24" Steel Return Air Filter Grille For 1" Filter - Removable Face/Door - HVAC Duct Cover - Flat Stamped Face - Black [Outer
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24" X 16 Steel Return Air Filter Grille For 1" Filter - Removable Face/Door - HVAC Duct Cover - Flat Stamped Face - White [Outer Dimensions: 26.5 X
Amazon.com
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22X20x23.5 W/Filter Rack Return Air Duct Plenum-26 Gauge, Hvac Duct Work
Walmart
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22X20x23.5 W/Filter Rack Return Air Duct Plenum-26 Gauge, Hvac Duct Work
Walmart
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Alpine Blueridge 24-36CD KIT2 Concealed Duct Return Kit For (Four Returns, 10 Inch Ducts)
Alpine Home Air Products
$1,107.00
Alpine Blueridge 24-36CD KIT2 Concealed Duct Return Kit For (Four Returns, 10 Inch Ducts)
Alpine Home Air Products
$320.35
SOUTHWARK METAL SBF36 Return Air Duct Plenum 26 Ga 36 Inch
Voomi Supply
$320.35
SOUTHWARK METAL SBF36 Return Air Duct Plenum 26 Ga 36 Inch
Voomi Supply
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$169.99
Oxbox Heat Pump Return Plenum
eFireplaceStore
19% off
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$169.99
Oxbox Heat Pump Return Plenum
eFireplaceStore
$110.62
Achtek 8"X14" Duct (10"X16" Overall Size) Solid Cast Aluminum HVAC Air Return Grill Vent Cover | Powder Coated | For Floor-Black Without Screw Holes
Amazon.com
8
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$110.62
Achtek 8"X14" Duct (10"X16" Overall Size) Solid Cast Aluminum HVAC Air Return Grill Vent Cover | Powder Coated | For Floor-Black Without Screw Holes
Amazon.com
$247.70
21"X39"X12" Tall Furnace Stand Return Air Box Duct Hvac
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21.25X21.25X35 1/2 W/Filter Rack Return Air Duct Plenum26 Gauge, HVAC Duct Work
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$209.99
BUILDMART - 36" Plenum Box For [36" Linear Slot Diffuser - (2 Slot) Double Slot] Premium Insulated Galvanized Sheet Metal Plenum Box For Heating And
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Fits 20X10 Duct Opening | Steel Return Air Filter Grille By Handua [Removable Door] | Vent Cover Grill | White | HVAC Cold Air Intake Grille | Out Dim
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Alpine AH 18CD KIT8 Concealed Duct Return Kit For (One Return, 14 Inch Duct)
Alpine Home Air Products
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Linear Slot Diffusers
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Linear Slot Diffusers
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Amazon.com
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HVAC Premium 20'' X 18 Steel Return Air Filter Grille For 1'' Filter - Fixed Hinged - Ceiling Recommended - HVAC Duct Cover - Flat Stamped Face -
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HVAC Premium 20'' X 18 Steel Return Air Filter Grille For 1'' Filter - Fixed Hinged - Ceiling Recommended - HVAC Duct Cover - Flat Stamped Face -
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HVAC Premium 26" X 18" [Duct Opening] Flat Stamped Steel Return Air Grille - Sidewall And Ceiling - HVAC Vent Duct Cover - White [Outer Dimensions:
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HVAC Premium 26" X 18" [Duct Opening] Flat Stamped Steel Return Air Grille - Sidewall And Ceiling - HVAC Vent Duct Cover - White [Outer Dimensions:
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BUILDMART - 18" Plenum Box For [18" Linear Slot Diffuser - 1 Slot - Single Slot] Premium Insulated Plenum Box For Heating And Cooling - Texas Buildmart
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IMPERIAL Fiberglass Duct Plenum | GVL0267
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BUILDMART - 36" Plenum Box For [36" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box For Heating And Cooling - Texas Buildmart
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BUILDMART - 36" Plenum Box For [36" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box For Heating And Cooling - Texas Buildmart
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