Keep your fridge cool with the Valterra FridgeCool Fan! This portable fan sits in your RV or camper refrigerator, circulating air. With cold airflow reaching every corner of the space, your food can last longer in the fridge. The energy efficient design allows the fan to stay working for 30 days of straight use. With an easy on/off switch, you can easily use the fan only when you need it. This compact air circulation system measures 0.9 x 0.6 x 0.5 inches, making it the perfect size for any RV fridge. Requires 2 D batteries for use (not included).