Fan-Tastic Vent 802250 Vent Fan

It now features a manual lift along with a built-in thermostat that can be preset. This allows the fan to operate at one of three pre-selected speeds when the thermostat calls for cooler air. Once the thermostat is satisfied, the fan automatically shuts off. It helps keep pets comfortable while your away and ventilates the air while you sleep. Polycarbonate smoke colored dome. Fits standard 14″ x 14″ roof openings. Dimensions: 16.5″ L x 4.5″ W x 16.5″ H.