Champion Cooler 4000-CFM 2-Speed Indoor/Outdoor Window Evaporative Cooler for 1100-sq ft (Motor Included) in the Evaporative Coolers department at Lowes.com
Amazon.com: Air Choice Poratble Swamp Cooler Fan, Oscillating Evaporative Air Cooler for Room, Portable Air Conditioner, Instant Cool & Easy Use : Home & Kitchen
California fires 2020. DIY Swamp Cooler filter. - YouTube