iPower Electric heater is made specifically for wet environments like greenhouses! It features a stainless steel housing totally enclosed fan motor and is completely (IPX4 rated). Another feature unique to this heater is that the fan runs continuously in heat mode providing optimal air circulation and heat distribution Other features include built-in dial thermostat with a -58° F to +210.2° F range, fan-only operation overheat protection and discharge safety grills and stable anti-tip over design. Comes with 7 Feet grounded power cord. Electric Supply 120V 60Hz - Air output 4500 Cubic Foot/ Hour - Adjustment range -50° C to + 99 ° C (-58°F to 210 2°F).