Fan-Tastic Vent 801250 RV Roof Vent 1250 Series Vent - White MODEL 1250 - This lightweight, compact and durable vent fan seals tight when not in use. Powerful 12 in, 10-blade fan quickly moves air into and out of the cabin. THREE-SPEED FAN - The core of this truly fantastic ventilation solution is a high performance rotary fan that features three blade speeds; low, medium, and high. REVERSIBLE AIRFLOW - The powerful yet compact Dometic Fantastic Vent has fixed, manual speeds or automatic variable speeds to get the airflow precisely as you want. It's simple reverse switch changes the fan direction, drawing air in or out of the vehicle. NO NOISE - Warm and stale air out, fresh and clean air in. Dometic FanTastic Vent does it in a matter of minutes. Its pleasantly quiet and energy saving, too. PERFECT FIT - Fits standard 14 inch x 14 inch openings. White, high profile base and smoke dome. Lifting knob to open manually.