Round, motorized zoning damper for 8" ducting. This is a great damper for zoning an 8" duct. It connects with an RJ11 6x4 connector that just snaps into place and makes installation really simple.
Features
Underwriter Laboratories recognized;
24 VAC, 25mz, 5 watts maximum;
1 minute to open cycle;
Power to open/power to close - does not rely on spring closure.