FAN WITH REVERSIBLE AIRFLOW : 10-Blade Skylight Fan Provides Perfect Air Circulation for All-Season Comfort & Relief | In/Out Exhaust Capability Allows You to Draw in & Circulate Fresh Air from Outside or Push Stale Air Outdoors, Lowering RV Temperature & Eliminating Foul Odors from Food, Smoke, Waste, Pets & More.
eBay