Stay cool, circulate stale air, and stay protected from the outside elements at the same time! Complete ventilation system that incorporates a vent, fan and rain protection all in one unit. Features a powerful 10 speed fan, thermostat, air intake and exhaust. Flush mounted keypad for easy touch controls. Fan runs with lid closed to circulate air (ceiling fan mode). Moves over 900 cu.ft. of air per minute. The MaxxFan is the only complete RV ventilation system that incorporates a vent, fan and rain protection in a single all-in-one-unit. The Only RV Ventilator Fan with a Built-In Rain Cover! 2 year limited warranty with Lifetime limited on lid.