Backdraft Damper - 14 in - Galvanized Steel - Rubber Gasket

Stop Reverse Airflow When Fans Shut Off - 14 in Duct

When an exhaust fan stops, air can drift back down the duct, carrying odors and outside air into the grow space. This backdraft damper closes when the fan is off and blocks that reverse flow. It helps hold in conditioned air and supplemental CO2, and the rubber gasket pre-installed on the exterior helps seal the connection.

This 14 in unit is sold each. It suits a single exhaust run in a grow room or tent, whether you cultivate at home or manage one duct line in a larger facility. Buy one per run that needs protection from backflow.

Key Features & Benefits

• Backdraft design — blocks reverse airflow when the fan is off.
• Galvanized steel construction — gives a durable body for ventilation ducting.
• Pre-installed exterior rubber gasket — supports an airtight seal without extra parts.
• 14 in size — matches 14 in duct runs.

Who Should Use Backdraft Damper 14 in

Growers with 14 in exhaust ducting who want to keep odors and outside air from flowing back into the cultivation space, and who want to keep supplemental CO2 in the room.

About Backdraft Damper 14 in

This is a 14 in galvanized steel backdraft damper with a rubber gasket pre-installed on the exterior. It is sold each. Package dimensions are 17 x 17.2 x 13.2 in, and shipping weight is 7.8 lb.

Frequently Asked Questions

Q: What does a backdraft damper do?
A: It lets air flow in one direction only. When the fan stops, the damper closes and prevents air from moving back through the duct.

Q: Will it help with odors?
A: Yes. By preventing reverse airflow, it keeps odors from flowing backward through the duct when the fan is off.

Q: Can it help keep CO2 in the room?
A: It can help. Blocking reverse airflow reduces the loss of supplemental CO2 through the exhaust duct while the fan is off.

Q: What is the gasket for?
A: The rubber gasket is pre-installed on the exterior. It helps create an airtight seal where the damper meets the duct or opening.

Q: What material is it made from?
A: The body is galvanized steel, a common choice for ventilation ducting.

Q: How many come in an order?
A: One damper. It is sold each.