Very quiet operation, the high quality Ni-Cad battery can run up to 30 hours with no sunlight!
No wiring required!
2 types of blades are supplied for your choice- intake and exhaust. The 4" ventilator moves 900 cubic feet (25m3) of air per hour in and out. Comes with a Ni-Cad rechargeable battery / solar cell (1.2v, 3000MA) and a built-in on/off switch. This vent can be fixed to almost any surface and the surface needs to be as flat as possible for best installation.
Ventilator will continue to work if battery is dead as astandard solar vent.
Ventilator cutout diameter: 4-3/4" (120mm)