Rain Sensor closes lid if it rains..Waterproof, molded mounting holes for easy installation of MaxxAir Vent Covers. 2-YEAR Limited WARRANTY with LIFETIME Limited WARRANTY on lid. Brings in fresh air and removes hot musty air and odors. Easy to remove interior insect screen, simply rotate four retaining knobs to remove screen for cleaning, no tools required. Twin lifting arms, No more lid fluttering in high winds or when driving. Features a powerful, fuse protected, Long life, sealed ball bearing, 12 volt fan motor and a 12", 10 bladed fan. Provides over 900 Cubic feet of air per minute to keep you cool and comfortable. Flush mounted, easy to clean Keypad, controls fan speed, thermostat, air intake and exhaust functions..Fits all standard 14" x 14" roof openings. Closes securely for a low profile appearance. Fan runs with lid closed to circulate air (Ceiling Fan Mode). All mounting screws and hardware included. Roof sealant must be purchased separately.

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov