1,48 In. Portable Air Cooler 2,Cools 4,000 sq. ft 3 ... 3. No need to install, portable, could be used immediately after connecting water and electricity.4. Efficient environmental protection ... , evaporated with water without harmful refrigerants5. Fresh air 0-20, ... events, auto auctions, dry cleaners, greenhouse,etc. portable evaporative Water air cooler