[DC 12V]

Check Valves
Notice for electric connection: "+" is in the middlefor 12VDC while "-" is in the middle for 220Vand 24V
3" 75mmHVAC Air Duct Valve / Electric Air Duct Damper /
Motorized Damper
Features:
1. This damper is suitable for controlling the air volume from full flow to shut off
2. The damper is constructed withplastic and come with plastic pipe.
3. It can work withthermostat, openandclose automatically.