8-Inch Backdraft Damper Shutter Inline Spring Loaded for Dryer Duct

Nice damper. Works great for my dryer exhaust system. Hoping to keep some cold air out of my dryer vent exhaust. Seems to help a bit. Def will keep critters out, not that I ever had a problem before… but nice in the Winter time to reduce cold air infiltration.

I looked at a lot of different options before purchasing this. It fit perfectly and is sturdy. On the lowest setting for my vent hood it opens just fine and on the highest setting it opens all the way and closes fine. Zero complaints.

This backdraft damper has been very effective at keeping odors out, which has made a huge difference. It works well most of the time and has really improved the air quality in my space. The only downside is that it occasionally gets stuck, so I have to check on it and adjust it now and then. Other than that minor issue, it’s a solid product that does what it’s supposed to do.

I put this damper in a horizontal run of 6" duct for a range hood. It fits right inside of standard 6" metal duct. I taped it place with aluminum tape and all is good. Because it's in a horizontal duct, it just needs to be oriented with the pivot shaft vertical, so the flaps will swing properly. It opened just fine with the range hood on low, and closed positively against the gasket that surrounds the opening when the fan is off.

Nice damper for dryer, keeping the cold air out which helps the overall temps in the room.

Little plastic flaps on vent fans and on roof vent are NOT enough to stop wind from sucking air out of your house.When a medium wind goes over my house, I can feel and hear the wind lifting the plastic / thin metal flap andsucking the air out of the room.The reason I know this is because these are the fans that were installed before I discovered the Backdraft Damper Shutter. Those fans "leak" (/Back draft) alot of air.Now when I install any fan ( 4", 6" vent), I install one of these Backdraft Damper Shutter and it works great.

My microwave vent to the outside of the house was letting cold air pour into my house. I purchased this backdraft damper and it instantly fixed my issue. It slid perfectly into place and has a good seal around the outer edges. The flaps do have small holes where they connect to the hinge but I put a piece of weather stripping on each side. It still lets the flaps perform like they should and when they close, it creates a perfect seal that blocks out any traces of air. Definitely recommend if you need a quick fix to stop backdraft and don’t want to tear all your duct work out.

I have used this type of damper from other manufacturers and they are not all built the same. This one has well balanced tension on the spring to allow for free airflow yet closes pretty tight to prevent backflow. Some I have used either have springs that have too much tension and do not open easily without a good amount of air pressure and / or don't seal very well when closed allowing a lot of backflow air leakage. It does not pay to go cheap on an inline damper. This unit is a good balance of quality and price.