True mechanical spring return – the most reliable fail-safe
Mount for clockwise or counterclockwise fail-safe
Check damper position easily with clear position indicator
MFG# NFBUP-S
California residents: Prop 65 Warnings
Warning
WARNING: This product can expose you to chemicals which is known to the State of California to cause cancer, or birth defects, or other reproductive harm. For more information, go to http://www.P65Warnings.ca.gov/
