Product Name: Ce Approved 350*350*178mm Roof Fan 580-1400m3/H AC/DC Roof Top Ventilation Fan Model NO.: REF700 Certification: RoHS, CE Mounting: Roof Fan Electric Current Type: AC Type: Centrifugal Fan Blade Material: Plastic Material: Plastic Model: Krf Rated Voltage: 230V/115V/24V Rated Frequency: 50/60Hz Air Flow: 580-1400m3/H Flux of Air Equip Filter Exported: as You Request Axle Flow Blower: Capacitance Electromotion Rated Current: 0.28-1.20A Rated Power: 61-140W Noise Level: 55-65dB Operating Temperature Range: -30-+70 Trademark: linkWELL Transport Package: by Cartons Specification: 350*350*178MM Origin: Shanghai HS Code: 841459 Product Description linkWELL's ventilator fan REF seriesInteriorThe precondition to use the top fan is that ambient temperature should be lower that the temperature required in the cabinet.FunctionThe high-power centrifugal top fan can vent the high heat load by the greatest degree.The centrifugal fan not only can avoid the vortex vented by the general shield magnetic fan,but also can reduce the noise caused by the friction of air.The FK series of Exit Filter can be used in the inlet in order to prevent from entering the humidity and dust.