KuulAire PACKA53 500 CFM Portable Evaporative Cooler with 325 Square Foot Cooling Capacity, Silver 500 CFM cools 325 Square Feet 10-25 degrees Adjustable water control knob and No pump required Please refer below manuals below the product description on how to install and maintain the item. also refer the contact details in it for any queries regarding the product Swing louvers, timer, and casters for better use of cooling Uses high-efficiency rigid media and tap water to generate cooler air with no assembly required