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$19.77
$21.99
2 Pcs 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector
Amazon.com
10% off
$19.77
$21.99
2 Pcs 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector
Amazon.com
$36.98
Fantech RSK6 RSK Series 6" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$36.98
Fantech RSK6 RSK Series 6" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$235.34
DAYTON 39.75"H-W 4.5"L Aluminum Backdraft Dampr: For 40 in Fan, For 40 in Nominal Duct Dia, Single Panel Model: 3HHN2
Grainger
$235.34
DAYTON 39.75"H-W 4.5"L Aluminum Backdraft Dampr: For 40 in Fan, For 40 in Nominal Duct Dia, Single Panel Model: 3HHN2
Grainger
$151.08
DAYTON 29.75"H-W 4.5"L Aluminum Backdraft Dampr: For 30 in Fan, For 30 in Nominal Duct Dia, Single Panel Model: 3HHL8
Grainger
$151.08
DAYTON 29.75"H-W 4.5"L Aluminum Backdraft Dampr: For 30 in Fan, For 30 in Nominal Duct Dia, Single Panel Model: 3HHL8
Grainger
$60.43
Fantech RSK12 RSK Series 12" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$60.43
Fantech RSK12 RSK Series 12" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$104.32
DAYTON 23.75"H-W 4.5"L Alu Univ Backdraft Dampr: For 24 in Fan, For 24 in Nominal Duct Dia, Single Panel Model: 2FTV7
Grainger
$104.32
DAYTON 23.75"H-W 4.5"L Alu Univ Backdraft Dampr: For 24 in Fan, For 24 in Nominal Duct Dia, Single Panel Model: 2FTV7
Grainger
$72.70
DAYTON 17.75"H-W 4.5"L Alu Univ Backdraft Dampr: For 18 in Fan, For 18 in Nominal Duct Dia, Single Panel Model: 2FTU9
Grainger
$72.70
DAYTON 17.75"H-W 4.5"L Alu Univ Backdraft Dampr: For 18 in Fan, For 18 in Nominal Duct Dia, Single Panel Model: 2FTU9
Grainger
$60.33
DAYTON 13.75"H-W 4.5"L Alu Univ Backdraft Dampr: For 12 in Fan, For 14 in Nominal Duct Dia, Single Panel Model: 2FTX5
Grainger
$60.33
DAYTON 13.75"H-W 4.5"L Alu Univ Backdraft Dampr: For 12 in Fan, For 14 in Nominal Duct Dia, Single Panel Model: 2FTX5
Grainger
$67.95
Backdraft Damper 14" - 411-STD 14
Global Industrial
$67.95
Backdraft Damper 14" - 411-STD 14
Global Industrial
$41.62
Fantech RSK8 RSK Series 8" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$41.62
Fantech RSK8 RSK Series 8" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$219.99
Canarm 9301004 3000 Series 18" X 18" Gravity Shutter Backdraft Damper
WebstaurantStore
$219.99
Canarm 9301004 3000 Series 18" X 18" Gravity Shutter Backdraft Damper
WebstaurantStore
$46.69
Fantech RSK10 RSK Series 10" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$46.69
Fantech RSK10 RSK Series 10" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$13.99
$14.99
6 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector
Amazon.com
$13.99
$14.99
6 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector
Amazon.com
$20.32
Fantech RSK4 RSK Series 4" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$20.32
Fantech RSK4 RSK Series 4" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$30.99
Copkim 4 Pcs Backdraft Damper One Way Airflow Dryer Vent Backflow Preventer Duct Draft Stopper Inline Fan Vent Deflector With 2 Spring Loaded Folding
Amazon.com
$30.99
Copkim 4 Pcs Backdraft Damper One Way Airflow Dryer Vent Backflow Preventer Duct Draft Stopper Inline Fan Vent Deflector With 2 Spring Loaded Folding
Amazon.com
$16.98
$19.99
8 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector
Amazon.com
15% off
$16.98
$19.99
8 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector
Amazon.com
$23.99
Kikerike 10 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector
Amazon.com
$23.99
Kikerike 10 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector
Amazon.com
$70.45
DAYTON 13.75"H-W 4.5"L Aluminum Backdraft Dampr: For 10 in Fan, Single Panel, 13 3/4 in H, 13 3/4 in W Model: 4HX33
Grainger
$70.45
DAYTON 13.75"H-W 4.5"L Aluminum Backdraft Dampr: For 10 in Fan, Single Panel, 13 3/4 in H, 13 3/4 in W Model: 4HX33
Grainger
$627.41
DAYTON 63"H-W 6 1/4"L Aluminum Backdraft Damper: For 60 in Fan, Double Panel, 63 in H, 63 in W, 3 in D Model: 3HHP2
Grainger
$627.41
DAYTON 63"H-W 6 1/4"L Aluminum Backdraft Damper: For 60 in Fan, Double Panel, 63 in H, 63 in W, 3 in D Model: 3HHP2
Grainger
$93.85
DAYTON 25"H-W 6"L Aluminum Backdraft Damper: For 20 in Fan, Single Panel, 25 in H, 25 in W, 2 1/4 in D Model: 53DR20
Grainger
$93.85
DAYTON 25"H-W 6"L Aluminum Backdraft Damper: For 20 in Fan, Single Panel, 25 in H, 25 in W, 2 1/4 in D Model: 53DR20
Grainger
$50.49
DAYTON 11.75"H-W 4.5"L Alu Univ Backdraft Dampr: For 12 in Fan, For 12 in Nominal Duct Dia, Single Panel Model: 2FTX4
Grainger
$50.49
DAYTON 11.75"H-W 4.5"L Alu Univ Backdraft Dampr: For 12 in Fan, For 12 in Nominal Duct Dia, Single Panel Model: 2FTX4
Grainger
$141.99
DAYTON 22.75"H-W 4.5"L Aluminum Backdraft Dampr: For 20 in Fan, Single Panel, 22 3/4 in H, 22 3/4 in W Model: 5NKN5
Grainger
$141.99
DAYTON 22.75"H-W 4.5"L Aluminum Backdraft Dampr: For 20 in Fan, Single Panel, 22 3/4 in H, 22 3/4 in W Model: 5NKN5
Grainger
$110.19
DAYTON 21"H-W 5.75"L Aluminum Backdraft Damper: For 18 in Fan, Single Panel, 21 in H, 21 in W, 2 1/2 in D Model: 4C558
Grainger
$110.19
DAYTON 21"H-W 5.75"L Aluminum Backdraft Damper: For 18 in Fan, Single Panel, 21 in H, 21 in W, 2 1/2 in D Model: 4C558
Grainger
$23.99
$29.69
[Upgraded] Hon&Guan 10 Inch Duct Backdraft Damper, One-Way Airflow Ducting Insert Backflow Preventer Duct Draft Blocker, HVAC Inline Fan Vent
Amazon.com
19% off
$23.99
$29.69
[Upgraded] Hon&Guan 10 Inch Duct Backdraft Damper, One-Way Airflow Ducting Insert Backflow Preventer Duct Draft Blocker, HVAC Inline Fan Vent
Amazon.com
$28.47
Fantech RSK5 RSK Series 5" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$28.47
Fantech RSK5 RSK Series 5" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$75.45
DAYTON 13"H-W 5 1/4"L Aluminum Backdraft Damper: For 10 in Fan, Single Panel, 13 in H, 13 in W, 3 in D Model: 3HHN4
Grainger
$75.45
DAYTON 13"H-W 5 1/4"L Aluminum Backdraft Damper: For 10 in Fan, Single Panel, 13 in H, 13 in W, 3 in D Model: 3HHN4
Grainger
$60.67
DAYTON 14"H-W 4.5"L Aluminum Backdraft Damper: For 12 in Fan, Single Panel, 14 in H, 14 in W, 2 in D, Felt Model: 4HX64
Grainger
$60.67
DAYTON 14"H-W 4.5"L Aluminum Backdraft Damper: For 12 in Fan, Single Panel, 14 in H, 14 in W, 2 in D, Felt Model: 4HX64
Grainger
$120.45
DAYTON 25"H-W 4.5"L Aluminum Backdraft Damper: For 20 in Fan, Single Panel, 25 in H, 25 in W, 2 in D, Felt Model: 4HX67
Grainger
$120.45
DAYTON 25"H-W 4.5"L Aluminum Backdraft Damper: For 20 in Fan, Single Panel, 25 in H, 25 in W, 2 in D, Felt Model: 4HX67
Grainger
$130.34
DAYTON 23"H-W 5 1/4"L Aluminum Backdraft Damper: For 20 in Fan, Single Panel, 23 in H, 23 in W, 3 in D Model: 3HHN8
Grainger
$130.34
DAYTON 23"H-W 5 1/4"L Aluminum Backdraft Damper: For 20 in Fan, Single Panel, 23 in H, 23 in W, 3 in D Model: 3HHN8
Grainger
$84.88
DAYTON 15"H-W 5 1/4"L Aluminum Backdraft Damper: For 12 in Fan, Single Panel, 15 in H, 15 in W, 3 in D Model: 3HHN5
Grainger
$84.88
DAYTON 15"H-W 5 1/4"L Aluminum Backdraft Damper: For 12 in Fan, Single Panel, 15 in H, 15 in W, 3 in D Model: 3HHN5
Grainger
$88.13
Soler & Palau 16"Dia Aluminum Backdraft Damper: For 16 In_24 in Fan, For 16 in Nominal Duct Dia, Double Panel Model: CAR400
Grainger
$88.13
Soler & Palau 16"Dia Aluminum Backdraft Damper: For 16 In_24 in Fan, For 16 in Nominal Duct Dia, Double Panel Model: CAR400
Grainger
$43.67
DAYTON 7.75"H-W 4.5"L Aluminum Backdraft Damper: For 8 in Fan, For 8 in Nominal Duct Dia, Single Panel Model: 3HHL4
Grainger
$43.67
DAYTON 7.75"H-W 4.5"L Aluminum Backdraft Damper: For 8 in Fan, For 8 in Nominal Duct Dia, Single Panel Model: 3HHL4
Grainger
$87.90
DAYTON 15.75"H-W 4.5"L Aluminum Backdraft Dampr: For 12 in Fan, Single Panel, 15 3/4 in H, 15 3/4 in W Model: 4HX75
Grainger
$87.90
DAYTON 15.75"H-W 4.5"L Aluminum Backdraft Dampr: For 12 in Fan, Single Panel, 15 3/4 in H, 15 3/4 in W Model: 4HX75
Grainger
$93.71
Soler & Palau 6"Dia Galvanized Steel Backdraft Damper: For 6 In_16 in Fan, For 6 in Nominal Duct Dia, Double Panel Model: MCA-150
Grainger
$93.71
Soler & Palau 6"Dia Galvanized Steel Backdraft Damper: For 6 In_16 in Fan, For 6 in Nominal Duct Dia, Double Panel Model: MCA-150
Grainger
$77.03
Tjernlund BD-8 Backdraft Damper For 8" Ducts, BD-8 | Supplyhouse.Com
SupplyHouse.com
$77.03
Tjernlund BD-8 Backdraft Damper For 8" Ducts, BD-8 | Supplyhouse.Com
SupplyHouse.com
$97.28
DAYTON 17.75"H-W 4.5"L Aluminum Backdraft Dampr: For 12 in Fan, Single Panel, 17 3/4 in H, 17 3/4 in W Model: 4HX77
Grainger
$97.28
DAYTON 17.75"H-W 4.5"L Aluminum Backdraft Dampr: For 12 in Fan, Single Panel, 17 3/4 in H, 17 3/4 in W Model: 4HX77
Grainger
How to Install The KOM U Backdraft Damper
1:37
How to Install The KOM U Backdraft Damper
6.6K viewsDec 23, 2024
YouTubeVents-US
Cape Backdraft Damper by Tamarack
2:04
Cape Backdraft Damper by Tamarack
4.7K viewsMay 15, 2024
YouTubePioneer Builders Inc
Butterfly Backdraft Damper for Round Air Duct by Luxury Metals
0:18
Butterfly Backdraft Damper for Round Air Duct by Luxury Metals
85.1K viewsFeb 26, 2010
YouTubeLuxury Metals LLC
Fantech RSK 6 Backdraft Damper 6" Duct
0:31
Fantech RSK 6 Backdraft Damper 6" Duct
2.5K viewsAug 29, 2014
YouTubeIAQ HQ
Inline Backdraught Damper | Stop Cold Air in Ducting
1:38
Inline Backdraught Damper | Stop Cold Air in Ducting
25 views1 month ago
YouTubeKair Ventilation
"Exploring Different Types of HVAC Dampers: Components and Working Principles"
4:21
"Exploring Different Types of HVAC Dampers: Components and Working …
11.7K viewsApr 13, 2023
YouTubeHVAC FOR LIFE
Wood Furnace Backdraft Damper Fabrication - Sheet Metal Hack
10:17
Find in video from 00:41Damper Fail Safe Position
Wood Furnace Backdraft Damper Fabrication - Sheet Metal Hack
2.2K viewsNov 24, 2021
YouTubeTractorman44
1:35
[Quick How-to] Install Damper for Easy DIY HVAC Ductwork
96.6K viewsJun 4, 2021
YouTubeHammer and Rake
2:12
How Does A Backdraft Damper Work In Dryer Vents? - Explaining Househo…
79 views8 months ago
YouTubeExplaining Household Mysteries
0:36
6 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow …
Jul 15, 2021
amazon
0:24
6" Motorized Duct Damper,On/Off Backdraft Damper Control, Stainless …
1 views9 months ago
amazon
1:30
Cape Backdraft Damper
95.9K viewsFeb 5, 2010
YouTubentsupply
0:46
HVAC Backdraft Damper - By FAMCO Manufacturing
50.3K viewsFeb 24, 2014
YouTubeFresh Air Manufacturing Co (FAMCO)
0:40
Tamarack Technologies Cape Backdraft Damper
46.6K viewsJun 17, 2013
YouTubeTamarack Technologies
21:52
Lets Build Motorized Backdraft Dampers for Supply Air Plenum
3.3K viewsDec 1, 2022
YouTubeTractorman44
0:36
Kikerike 10 Inch Draft Blocker Backdraft Damper Duct Draft Stoppe…
May 1, 2022
amazon
0:32
8" HVAC Duct Manual Volume Backdraft Damper, Stainless Steel A…
Nov 22, 2024
amazon
0:30
3" Motorized Duct Damper,Adjustable HVAC Damper, Stainless Steel Backd…
5 months ago
amazon
3:36
Damper Installation - Single Blade Rectangular
71.7K viewsJun 15, 2017
YouTubeMKTDuct
2:32
How Does A Dryer Vent Backdraft Damper Work? - Home Appliance Re…
79 views6 months ago
YouTubeHome Appliance Report
0:19
HVAC Express Inline Butterfly Damper.AVI
32.6K viewsMay 19, 2010
YouTubehvacexpress1
3:36
HVAC Damper System Explained | Types, Uses & How It Controls Airflow
9K views11 months ago
YouTubeS R HVAC
1:09
How to Install a Damper on a Start Collar – The Right Way! (HVAC Guide)
14.2K viewsMar 1, 2025
YouTubeESCO HVACR
2:01
Stop Extractor Fan Drafts - Fit a Backdraft Shutter // Energy Saving Tip!
95.8K viewsNov 5, 2022
YouTubeEndpoint101 Tech
3:45
How to Adjust HVAC Dampers for a Cooler Home
25.2K viewsJun 4, 2024
YouTubeAnthony Plumbing, Heating, Cooling & Electric
4:46
How to Install a Forced-Air Bypass Damper | This Old House
356.2K viewsJan 7, 2015
YouTubeThis Old House
2:36
Why Is Dryer Vent Backdraft Damper Important? - Explaining Household M…
7 views8 months ago
YouTubeExplaining Household Mysteries
0:51
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7.3K viewsJun 14, 2010
YouTubeTamarack Technologies
0:31
Fantech RSK 10 Backdraft Damper 10" Duct
1K viewsAug 29, 2014
YouTubeIAQ HQ
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Shop backdraft damper duct

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$19.77
$21.99
2 Pcs 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector
Amazon.com
10% off
$19.77
$21.99
2 Pcs 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector
Amazon.com
$36.98
Fantech RSK6 RSK Series 6" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$36.98
Fantech RSK6 RSK Series 6" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$235.34
DAYTON 39.75"H-W 4.5"L Aluminum Backdraft Dampr: For 40 in Fan, For 40 in Nominal Duct Dia, Single Panel Model: 3HHN2
Grainger
$235.34
DAYTON 39.75"H-W 4.5"L Aluminum Backdraft Dampr: For 40 in Fan, For 40 in Nominal Duct Dia, Single Panel Model: 3HHN2
Grainger
$151.08
DAYTON 29.75"H-W 4.5"L Aluminum Backdraft Dampr: For 30 in Fan, For 30 in Nominal Duct Dia, Single Panel Model: 3HHL8
Grainger
$151.08
DAYTON 29.75"H-W 4.5"L Aluminum Backdraft Dampr: For 30 in Fan, For 30 in Nominal Duct Dia, Single Panel Model: 3HHL8
Grainger
$60.43
Fantech RSK12 RSK Series 12" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$60.43
Fantech RSK12 RSK Series 12" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$104.32
DAYTON 23.75"H-W 4.5"L Alu Univ Backdraft Dampr: For 24 in Fan, For 24 in Nominal Duct Dia, Single Panel Model: 2FTV7
Grainger
$104.32
DAYTON 23.75"H-W 4.5"L Alu Univ Backdraft Dampr: For 24 in Fan, For 24 in Nominal Duct Dia, Single Panel Model: 2FTV7
Grainger
$72.70
DAYTON 17.75"H-W 4.5"L Alu Univ Backdraft Dampr: For 18 in Fan, For 18 in Nominal Duct Dia, Single Panel Model: 2FTU9
Grainger
$72.70
DAYTON 17.75"H-W 4.5"L Alu Univ Backdraft Dampr: For 18 in Fan, For 18 in Nominal Duct Dia, Single Panel Model: 2FTU9
Grainger
$60.33
DAYTON 13.75"H-W 4.5"L Alu Univ Backdraft Dampr: For 12 in Fan, For 14 in Nominal Duct Dia, Single Panel Model: 2FTX5
Grainger
$60.33
DAYTON 13.75"H-W 4.5"L Alu Univ Backdraft Dampr: For 12 in Fan, For 14 in Nominal Duct Dia, Single Panel Model: 2FTX5
Grainger
$67.95
Backdraft Damper 14" - 411-STD 14
Global Industrial
$67.95
Backdraft Damper 14" - 411-STD 14
Global Industrial
$41.62
Fantech RSK8 RSK Series 8" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$41.62
Fantech RSK8 RSK Series 8" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$219.99
Canarm 9301004 3000 Series 18" X 18" Gravity Shutter Backdraft Damper
WebstaurantStore
$219.99
Canarm 9301004 3000 Series 18" X 18" Gravity Shutter Backdraft Damper
WebstaurantStore
$46.69
Fantech RSK10 RSK Series 10" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$46.69
Fantech RSK10 RSK Series 10" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$13.99
$14.99
6 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector
Amazon.com
$13.99
$14.99
6 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector
Amazon.com
$20.32
Fantech RSK4 RSK Series 4" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$20.32
Fantech RSK4 RSK Series 4" Duct Round Backdraft Damper | Supplyhouse.Com
SupplyHouse.com
$30.99
Copkim 4 Pcs Backdraft Damper One Way Airflow Dryer Vent Backflow Preventer Duct Draft Stopper Inline Fan Vent Deflector With 2 Spring Loaded Folding
Amazon.com
$30.99
Copkim 4 Pcs Backdraft Damper One Way Airflow Dryer Vent Backflow Preventer Duct Draft Stopper Inline Fan Vent Deflector With 2 Spring Loaded Folding
Amazon.com
$16.98
$19.99
8 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector
Amazon.com
15% off
$16.98
$19.99
8 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector
Amazon.com
$23.99
Kikerike 10 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector
Amazon.com
$23.99
Kikerike 10 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector
Amazon.com
$70.45
DAYTON 13.75"H-W 4.5"L Aluminum Backdraft Dampr: For 10 in Fan, Single Panel, 13 3/4 in H, 13 3/4 in W Model: 4HX33
Grainger
$70.45
DAYTON 13.75"H-W 4.5"L Aluminum Backdraft Dampr: For 10 in Fan, Single Panel, 13 3/4 in H, 13 3/4 in W Model: 4HX33
Grainger