Upgrade your portable air conditioner with the HOOMEE 400CM Air Seal. This universal window seal kit is perfect for any home, office or dorm room. It is designed to fit any portable air conditioner and provide an airtight seal to keep the cool air in. The kit includes one white seal that is easy to instal and a screwdriver for easy installation. The HOOMEE brand is known for its quality products, and this air seal is no exception. With its compact design, it is perfect for those who want to use a portable air conditioner but are concerned about the cool air escaping.