XIANQI Please choose right size: Before placing order, please measure your AC carefully before choosing the right size. Size 17x13x3 fits indoor size at a full stretch 17x13x3(LxHxD). HIGH QUALITY MATERIAL ENERGY SAVING: All our indoor covers are made of 210D polyester/cotton, 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. Package includes:1*window AC cover for inside Sizes: 17x13x3:fitting indoor size at a full stretch 17x13x3(LxHxD). Color:Beige Features: High density Waterproof Material and Energy Saving: All our indoor covers are made of 210D polyester/cotton, 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. Note: 1-Air conditioner cover cannot be used when AC is running. 2-Please clean the cover with warm water and mild dish soap and completely dry it before storing.