Portable Evaporative Air Cooler, 1800CFM Swamp Cooler with 5.5 Gallon Top Fill Tank, 4 Ice Packs, 120° Oscillation, 3 Speeds, 12 Hour Timer, Remote, for Home Office Bedroom5. 5 Gal Top Fill Tank for Easier Daily Use Refill directly from the top without bending down to remove a lower tank. The 5. 5 gal water tank helps reduce refill frequency for everyday use, while the visible water window and rear drain outlet make it easier to monitor water level and empty the unit when needed. Evaporative Cooling with 4 Ice Packs Included Add water for refreshing evaporative airflow, or use the included ice packs for an even cooler