Dayton Mtrzd Damper, For Fan Dia. 24", 100-240V - 3C315

Suncourt Zonemaster 10-Inch Normally Open Motorized Damper - Power Close/Spring Return 24V Vent Damper, Plug-In Transformer Included (ZO210)

Rectorseal Truaire Grille/Damper 81914 Plastic Ceiling Diffuser With Incorporated Ceiling Box, Easy Installation, HVAC, 8X8 4 Way Grille/Damper

Fits 20X10 Duct Opening | Steel Return Air Filter Grille By Handua [Removable Door] | Vent Cover Grill | White | HVAC Cold Air Intake Grille | Out Dim

Fits 14X20 Duct Opening | Steel Return Air Filter Grille By Handua [Removable Door] | Vent Cover Grill | White | HVAC Cold Air Intake Grille | Out Dim

Fits 24X24 Duct Opening | Filter Included Steel Return Air Filter Grille By Handua [Removable Door] | Vent Cover Filter Grill | White | Outer

Fits 24X18 Duct Opening | Steel Return Air Filter Grille By Handua [Removable Door] | Vent Cover Grill | White | HVAC Cold Air Intake Grille | Out Dim

6 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector

Fits 12X12 Duct Opening | Steel Return Air Filter Grille By Handua [Fixed Hinged] For 1-Inch Filters | Vent Cover Grill For Sidewall And Ceiling |

Rectorseal Truaire Retrofit Grille/Damper MV3 81913 Plastic Ceiling Diffuser With Incorporated Ceiling Box, Easy Installation, HVAC, 8X8 3 Way

Fits 24X12 Duct Opening | Steel Return Air Filter Grille By Handua [Removable Door] | Vent Cover Grill | White | HVAC Cold Air Intake Grille | Out Dim

2 Pcs 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector

Fits 20X14 Duct Opening | Steel Return Air Filter Grille By Handua [Removable Door] | Vent Cover Grill | White | HVAC Cold Air Intake Grille | Out Dim

Fits 20X20 Duct Opening | Filter Included Steel Return Air Filter Grille By Handua [Removable Door] | Vent Cover Filter Grill | White | Outer

Fits 20X20 Duct Opening | Steel Return Air Filter Grille By Handua [Removable Door] For 1-Inch Filters | Vent Cover Grill | White | HVAC Cold Air

HVAC Premium 26 X 22 Duct Opening Steel Return Air Filter Grille, For 1-Inch Filter, Removable Door, Flat Stamped HVAC Vent Cover Grille, Outer

[Upgraded] Hon&Guan Duct Damper 4 Inch, Backdraft Damper One-Way Airflow Vent Damper Backflow Preventer For 4 Inch Duct Dryer Vent Hose-2Pcs

[Upgraded] Hon&Guan 10 Inch Duct Backdraft Damper, One-Way Airflow Ducting Insert Backflow Preventer Duct Draft Blocker, HVAC Inline Fan Vent

8 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector

Fits 20X30 Duct Opening | Steel Return Air Filter Grille By Handua [Removable Door] For 1-Inch Filters | Vent Cover Grill | White | HVAC Cold Air

Fixirons 6" HVAC Duct Manual Volume Damper Metal Adjustment Airflow Ducting Backdraft Damper For Air Ventilation System HVAC

Fits 24X24 Duct Opening | Steel Return Air Filter Grille By Handua [Removable Door] | Vent Cover Grill | White | HVAC Cold Air Intake Grille | Out Dim