The first-ever all-in-one RV vent fan with automatic rain protection just got better! The unique patented rain shield protects your RVs interior in any weather. Operate the fan with lid closed in ceiling fan mode. Just rotate four retaining knobs to remove the interior insect screen for easy cleaning with no tools required. NEW Features! Locking knob ensures vent lid stays fully open or closed (manual models). Mfr. 2 year warranty with lifetime limited warranty on lid (all models) Flush-mounted, easy-to-clean ceiling keypad, controls fan speed, thermostat & air intake/exhaust (all models) | Maxxair MaxxFan Deluxe Manual-Opening RV Ventilator System, White Lid