Support easy breathing and refreshing relief from year-round heating and cooling with this kid friendly, whisper quiet humidifier that features everyone's favorite ocean dweller! One gallon water tank is removable for easy carrying and filling, and filled tank runs up to 11 hours. Systems shuts off automatically when tank is empty, and the illuminated tank also provides night light function. For use in rooms up to 250 square feet. Measures 13" H x 11" W x 8" D. 120 volt. ETL listed. Replacement filter part #HS-1931.