3 Adjustable Air Speeds: Simple manual knob operation supports 3 airflow speeds and automatic swing louvers. Intuitive control panel allows quick adjustments to match different cooling demands Easy to add Water: Equipped with a big 40/50L water reservoir featuring a visible water level window. Comes with 4 ice packs to extend cooling duration and reduce frequent refilling work. Filter Air: This swamp cooler adopts large 3-sided cooling media to accelerate air circulation, effectively cooling and humidifying dry air and delivering widespread refreshing airflow Flexible Movement: Fitted with 4 universal rolling casters for flexible relocation. Removable rear panel simplifies daily cleaning Application: Built in 150W motor operates with low noise. Ideal for warehouses, shops, patios, cafes and workshops, Weight: 26.45547144 pounds, Manufacturer: PQXQZ