ALORAIR 540 CFM IP-55 Grade Crawlspace Ventilation Fans with Humidistat & Thermostat, 8.7 inches Basement Vent Fans with Isolation Mesh, Ventilator Fan for Crawl Space Basement Attic Garage, Exhaust

Power :45 W Voltage:115 V/ 60 Hz Current:0.51 A Airflow :540 CFM Size For :3600-5600 Cu.Ft Noise Level :<55 dBA Cord :6 ft Functioning Temperature Range :35-158 °F Functioning Humidity Range :5~80% 540 CFM, ventilation type: air out. The ventilator fan reduces humidity in damp crawl spaces, basements, attics, and garages. It can also increase air circulation to stop condensation and wood rot. It is also used to exhaust radon gas, treat wood gases and odors, and prevent them from entering living spaces. Built-in dehumidistat and freeze protection thermostat. Operating humidity: 10%-80%RH, this High-Flow Powered Ventilator Fan will turn ON/OFF automatically with a SET Humidity % Level. The Dehumidistat control will not operate if the freeze protection thermostat senses low outdoor temperatures (35°F/1.7°C. ). The isolation Mesh on the back prevent particulates from gaining access to the crawl space; The Aluminum Zinc Shell with an IP-55 rating Axial Fan, highly resistant to liquids and dust, higher weather-proof, makes it ideal for work in a humid environment with long service life, don't worry it rusts. All models are equipped with factory pre-installed thermostats to prevent fan operation when outdoor temperatures fall below 35°F.