8000CMH portable swamp air cooler is mainly composed of water tank, motor, fan, air curtain paper and shell. Through cold water, the air cooler provides cold air to adjust the temperature. It can be used for hotel, department, restaurant, hospital, office building and home etc. Feature: Indoor/Outdoor Evaporative Air Cooler â?¢ Evaporative cooler for indoor/outdoor cooling â?¢ Ideal for large open rooms, patio/ BBQ areas, garage, deck, backyard, warehouse â?¢ UV and weather resistant for outdoor use â?¢ Honeycomb cooling media on 3 sides for optimum cooling performance â?¢ Powerful 1540 CFM* air flow â?¢ Four durable caster wheels allow easy mobility â?¢ Sound level at high speed: 65 dB