$13.90
- 4" Inch Backdraft Damper for Straight or Flex Duct. Bathroom Exhaust Fan. Kitchen Hood Exhaust Fan and Different Dryer Fan Backflow Preventer. Steel Damper with Aluminum Valve Flaps (4")Amazon$25.00
POSTER-BACKDRAFTAmazon$9.99
Veemoon Control Valve Backdraft Shutter HVAC Ducting Backdraft Damper Micro Fan 4 Inch Fan House Fan HVAC Damper Backflow Shutter Household Fans Manual Fan Air Range Hood PVC WhiteAmazon$99.20and up
Soler and Palau 411024 24" X 24" Box Frame Backdraft Damper HVAC Support Duct DamperBuild.com & 1 more$120.00and up
Soler and Palau 411030 30" X 30" Box Frame Backdraft Damper HVAC Support Duct DamperBuild.com & 1 more$19.99
PATIKIL 4 Inch Backdraft Damper Control Valve, Duct Manual Volume Adjustment Airflow Ducting for Fan Airflow, Dryer Vent, Range Hood, WhiteAmazon$25.99
1 Set 6" Stainless Steel Backdraft Dampers with Ducting Hose Clamp - SilverBed Bath & Beyond$342.99
Panasonic 380 CFM WhisperCeiling Bath Fan with Built-in Backdraft Damper - FV-40VQ4Build.com$55.08
Soler and Palau 50 CFM 2 Sone Ceiling Mounted HVI Certified Bath Fan with Built-In Backdraft Damper - PCV50Build.com$17.89
Uonlytech Control Valve Range Fan Hood Deflector Backdraft Shutter Dryer Exhaust Hose Backflow Preventer Dryer Vent Backflow Shutter Household Fans Hvac Damper Manual Pvc White Exhaust FanAmazon$45.99
HG Power 8 Inch Kitchen Exhaust Fan, 576CFM Stainless Steel Bathroom Exhaust Fan, Wall Mounted Garage Ventilation Fan, Basement Extractor Fan with Backdraft Damper for Home Office Commercial UseAmazon$23.90
Backdraft Poster T-ShirtHot Topic$15.99
Backdraft Damper 6-6.3" Duct Connector Air Duct Backflow Valve BlackBed Bath & Beyond$12.99
Jamborum Backdraft Damper – 4 Inch Round – Prevent Unwanted Drafts in Metal Ducts – Professional-Grade, Heavy Duty Galvanized Steel with Aluminum Flaps – Spring-Loaded, One-Way Airflow InsertAmazon$18.99
Therwen Backdraft Damper Duct Manual Volume Damper with Sleeve Stove Pipe Galvanized Sheet Adjustment Airflow Ducting Branch HVAC Air Balancing for Range Hoods, Fans(4 Inch, 1 Pc)Amazon$10.29
4in Backdraft Blocker, ABS Plastic Backdraft Damper Dryer Vent Hose One Way Backflow Shutter Inline Extractor Fan Vent Back Draught Shutter AccessoriesAmazon$31.98
EATAKWARD Backdraft Damper HVAC Duct Manual Volume Damper Adjustment Airflow Ducting Branch HVAC Air Balancing for Air Ventilation System (6 Inch, 2 Pcs)AmazonSAVE $1.00
$8.98$9.98
4 Inch Backdraft Damper Back Draft Vent Duct Shutter Blocker, Backflow Ducting Insert One-Way Airflow Preventer with Inline Springs Loaded Folding Blades, HVAC Extractor Range Fan Hood DeflectorAmazon$17.99
4" Backdraft Damper HVAC Ducting Insert Draft Blocker Duct Adaptor RedBed Bath & Beyond$17.49
4" Backdraft Damper Backflow Preventer Draft Blocker Duct Adaptor RedBed Bath & Beyond$18.99
4" Backdraft Damper Ducting Insert Backflow Preventer Draft Blocker SilverBed Bath & Beyond$60.00
Anti-Backdraft DamperThe Home Depot$32.95
FAMCO Backdraft Damper 6 InchAmazon$19.49
PATIKIL 6" Backdraft Damper with Ducting Hose Clamp, 1 Set Stainless Steel Flexible Airflow Insert Backflow Preventer Draft Blocker for Kitchen BathroomAmazon$66.67
Norseman Anti-Backdraft DamperWayfair$12.27
4 in. Steel Backdraft DamperThe Home Depot$35.79
DAYTON 4HX72 Damper,BackdraftZoro.com$29.95
Inline Butterfly Backdraft Damper with SpringAmazon$196.99
DAYTON 6WRK7 Backdraft Damper,Horizontal,42 SqZoro.com$49.25
SOLER & PALAU CAR400 Steel Backdraft Damper,16"Zoro.com$145.99
DAYTON 3HHN1 Backdraft Damper,Horizontal,35-3/4SqZoro.com$34.99
Elite Tactical 3.6 in. Backdraft Folding KnifeTractor Supply$14.24and up
Soler and Palau CAR150 6"/150MM Steel Backdraft Damper Galvanized Steel HVAC Support Duct DamperBuild.com & 1 more$32.12
Fantech 9800000 RSK-4 Backdraft Damper, 4" DuctAmazon$65.51
Dayton 14" Backdraft Damper/Wall Shutter, 14-1/2" x 14-1/2" Opening RequiredAmazon$17.75
calimaero® 4 Inch Backdraft Exhaust Damper Seal One Size Fits All Duct Backdraft Damper Gravity Powered Made in Germany HVAC Damper Dryer Vent Valve Keep Cold Air OutAmazon$21.39
AMERIFLOW G1700B14 Snap-On Backdraft Damper,14"Duct Dia.Zoro.com$9.90
- 4" inch Plastic Inline Backdraft Damper. Connect Exhaust or Bathroom air Dryer and ducting with Backdraft Damper. HVAC. Heating. Cooling. Kitchen and Bathroom Applications.Amazon$17.99
4" Metal Backdraft Damper Backflow Preventer Draft Blocker Connector - RedBed Bath & Beyond$30.39
DAYTON 3HHL4 Backdraft Damper,Vert/Horiz Mtg,7 3/4 SqZoro.com$34.99
Elite Tactical 5 in. Half-Serrated Backdraft Fixed Blade KnifeTractor SupplySAVE $12.11
$7.89$20.00
Tjernlund BD-4 Spring Return Backdraft Damper for 4" DuctsAmazon$40.99
HVAC Duct Manual Volume Damper, Adjustment Backdraft Damper Control - SilverBed Bath & Beyond$52.99
DAYTON 3HHN4 10 in Backdraft Damper / Wall Shutter, Front FlangeZoro.com$26.49
HVAC Duct Manual Volume Damper, Adjustment Retardant Backdraft Damper - BeigeBed Bath & Beyond$34.99
Elite Tactical 3.6 in. Half-Serrated Backdraft Folding KnifeTractor SupplySAVE $1.00
$11.99$12.99
FRESH SPEED 4 Inch Professional Backdraft Damper Shutter Connector DuctAmazon