The Maxx Air 14 In. Exhaust Fan can be used in a garage, barn, greenhouse, warehouse, and a variety of other agricultural and industrial locations to quickly remove unwanted odors, dust and humidity, and refresh stale or warm air in your space. This wall exhaust fan is constructed of a sturdy 20 gauge steel housing with aluminum shutter louvers, a safety grille and a totally enclosed, thermally protected motor. Arrives fully assembled, just mount to your desired building wall and wire into your electrical system to complete installation. Moves up to 1,400 CFM Rust-resistant galvanized steel housing with removable interior grille Pre-drilled holes on flange and rolled flange edges for safe and easy installation Automatic shutter prevents drafts from entering through the external opening OSHA compliant grille and totally enclosed, energy efficient PSC motor Requires wiring to your building's electrical system and 4.5 sq. ft. of NFA intake ventilation. Not intended to exhaust hazardous fumes or chemicals. 1-year limited warranty Manufacturer warranty covers parts and manufacturer defects only and does not cover whole units, labor, returned shipping, damages or defects due to personal harm or misuse