Maxx Air Powerful Industrial Exhaust and Ventilation Fan (18 Inch)

HEAVY DUTY EXHAUST FAN: The housing is made of galvanized steel which prevents rust and has pre-drilled holes for easy mounting. Rolled flange edges offer handling protection during installation.
MULTI USE VENTILATION FAN: Perfect for agriculture, industrial, restaurant, school, gym, or home.
EXHAUST FAN WITH SHUTTER: The exterior shutters close tightly to prevent a draft when not in operation and open automatically when powered on. It helps remove unwanted odors, contaminants, excess moisture or heat.
EXHAUST FAN WARRANTY: This heavy duty exhaust fan has a 1 year limited warranty. The shutters open and close automatically. Fans do not come with electrical plugs. Requires wiring to your building's electrical system.
THERMALLY PROTECTED FAN: The fan has 2 OSHA-compliant features including a safety grille and a fully enclosed, thermally protected, PSC energy efficient motor.