**4 Sizes Available**: There are total 4 sizes for your option to fit any brand and most standard-sized window AC units. S size is 21 x 14 x 3 inches (L x H x D), fitting most of 6000BTU to 8000BTU window air conditioners, or indoor size 19"-21"x 12"-14" x 3"(L x H x D).
**High-quality Material &Energy Saving**: All our indoor covers are made of 210D polyester/cotton, and we offer 3-year quality guaranty. Stopping wind and cold air from entering A/C and sharply reducing heating cost during winter.
**Easy to Install**: No installation tools required. There is an elastic strip that is sewn around the cover. Simply put the cover over the inside of air conditioner.
**Great Convenience**: No need to dismount your A/C unit each winter. This indoor cover allows you to leave your AC unit in the window all year long. All our covers are machine washable & reusable& durable.
**High Health &Sanitation**: Preventing dust, dirt, and other small debris from blocking your A/C unit when not in use and keeping you and your family in perfect health.