DL Wholesale Backdraft Damper - 8-in

Stop Reverse Airflow in Your Duct Run - 8-in Duct Size

When an exhaust fan shuts off, air and odors can drift back down the duct into your growing space. This backdraft damper closes against reverse flow, so air moves in one direction only. It is made of galvanized steel and has a rubber gasket pre-installed on the exterior to help the fit seal against the duct.

This unit fits 8-in ducting and is sold individually. It suits home gardeners and small to mid-size indoor cultivation rooms that need one damper per exhaust or intake run. Commercial growers can order one for each run they manage.

Key Features & Benefits

• Galvanized steel construction — a durable body for use in ventilation ducting.
• Prevents reverse airflow — air does not flow backwards when the fan is off.
• Helps retain CO2 and block odors — less backflow means less loss from the room and less odor drifting back.
• Pre-installed exterior rubber gasket — supports a tight seal where the damper meets the duct.
• Compact size — measures 8 x 8 x 5 in and weighs 1.7 lb.

Who Should Use DL Wholesale Backdraft Damper

Growers running 8-in duct with an inline or exhaust fan who want to stop backflow when the fan cycles off. It suits vegetative and flowering rooms, tents, and hydroponic setups that depend on controlled air exchange.

About DL Wholesale Backdraft Damper

The DL Wholesale Backdraft Damper is an 8-in galvanized steel damper for ventilation ducting. It measures 8 in long, 8 in wide and 5 in high, ships at 1.7 lb, and is sold as one unit. Its GTIN is 816731018241.

Frequently Asked Questions

Q: What does a backdraft damper do?
A: It lets air pass in the direction of fan flow and closes when the fan stops. This prevents air and odors from moving backwards through the duct.

Q: What duct size does it fit?
A: This model is made for 8-in ducting. Check your duct diameter before ordering.

Q: Does it include a flange?
A: No. A flange is not included with this damper.

Q: What is it made of?
A: The body is galvanized steel. A rubber gasket is pre-installed on the exterior.

Q: Why is the gasket important?
A: The gasket fills small gaps where the damper meets the duct. That supports an airtight connection and reduces leakage.

Q: Is it UL listed?
A: No. This product is not listed as UL listed.