The Maxx Air 48 In. Evaporative Cooler is a cost-effective solution to creating a comfortable work environment in a large open factory or warehouse space, a shop or barn, and a pleasant atmosphere for sports events and outdoor entertainment venues and parties. This portable cooling fan is built to resist wear and tear and is constructed of a durable polyethyle housing with heavy-duty aluminum fan blades, an energy-efficient belt-driven motor and a fully submersible pump that makes it ideal for indoor and outdoor usage. Move this swamp cooler to your desired location and lock it in place effortlessly with the built-in caster wheels. Feel the ambient temperature in spaces up to 3,600 sq. ft. lower by as much as 26°F without air conditioning and choose between 2 fan speeds to meet your ventilation needs. Connect to a direct water line or use the available 15 gallon reservoir for independent use.