Looking for something weird.

[Blue_Focus]

I'm looking for something like a check valve for 4" exhaust pipe.

I want to exhaust the air in my tent to the outside, But it's winter here and I don't want any cold air coming back into the tent.

Even with my carbon filter my allergies are going nuts.

 

[TCH]

Backdraft Damper Ducting Insert, 4-Inch, Black Galvanized Steel

Your source to create smart growing systems with components including advance grow tents, inline fans, clip-on fans, LED grow lights, and UIS™ controllers.

acinfinity.com

They should be available on Amazon as well

 

[VaSmile]

Can you exhaust into the return of your hvac that way it helps save your furnace some work and pushes it though your home air filters

 

[Blue_Focus]

Backdraft Damper Ducting Insert, 4-Inch, Black Galvanized Steel

Your source to create smart growing systems with components including advance grow tents, inline fans, clip-on fans, LED grow lights, and UIS™ controllers.

acinfinity.com

They should be available on Amazon as well

Perfect, Thanks.

 

[altaran]

I'm looking for something like a check valve for 4" exhaust pipe.

I want to exhaust the air in my tent to the outside, But it's winter here and I don't want any cold air coming back into the tent.

Even with my carbon filter my allergies are going nuts.

I was so wondering this same thing today..... You asked the question I was wondering.. lol

 

[Herb & Suds]

Four inch dryer vent has dampers