Keep your cool with this convenient KoolKing through-the-wall air conditioner. Designed to fit all existing wall openings, this window air conditioner offers three cool settings and three fan settings for custom comfort. It's equipped with a 24-hour on-off timer and comes with a remote so you're always in control. With the ability to comfortably cool rooms up to 450 square feet in size, this electronic air conditioner is an eco-friendly option when the weather heats up. A slide-out washable air filter makes clean up a breeze.