Exhaust Fan Backdraft Damper

For this exhaust fan, is a backdraft damper required? And what type - gravity or spring-loaded?

I'm checking exhaust fan backdraft damper at [location]. I found damper with blades that close by gravity or spring when exhaust fan stops. For this exhaust fan, is a backdraft damper required? And what type - gravity or spring-loaded?

Joints, TDC, Flanges & Connections 2nd Year YELLOW

Stop if

Hold point on exhaust fan backdraft damper: I have the location, photo, drawing/detail, and what I checked. Who should verify before this gets cut, drilled, covered, lifted, connected, or signed off?

Watch out

Don't install exhaust fans without backdraft dampers where required. Don't use wrong damper type for the application.

Check

room/grid/area
photo of condition
drawing/detail or submittal
what I already checked
what is blocking progress

Say this to your foreman

14129 exhaust fan backdraft damper vavs, fan coils & equipment connections yellow 2 for this exhaust fan, is a backdraft damper required? and what type - gravity or spring-loaded? i'm checking exhaust fan backdraft damper at [location]. i found damper with blades that close by gravity or spring when exhaust fan stops. for this exhaust fan, is a backdraft damper required? and what type - gravity or spring-loaded? exhaust fan backdraft damper, gravity damper exhaust, backdraft install backdraft damper, gravity damper, relief damper, exhaust damper flap on fan, one-way damper, gravity damper, exhaust check valve

More in Joints, TDC, Flanges & Connections