[Accommodates Single and Dual-Hose Units]Equipped with two -closure ports featuring adjustable drawstrings, this kit allows for a tight seal around either one or two exhaust hoses. Easily seal the unused port to enhance efficiency when operating a single-hose air conditioner. [Superior Insulated Material]Constructed from high-quality waterproof Oxford cloth with thick cotton insulation and a heat-reflective inner layer, this window seal kit effectively blocks UV rays, resists moisture, and minimizes heat transfer, offering superior protection compared to thinner alternatives. [Renter-Friendly Installation]This window seal kit attaches securely without the need for drilling, using heavy-duty adhesive hook-and-loop tape. Perfect for renters in apartments or dorms, it's designed exclusively for horizontal sliding and single- or double-hung . [Universal Compatibility]Designed to fit a variety of window sizes, this window seal kit adjusts from 48" to 64" in length, ensuring a for most and clothes dryers. Its versatile design makes it an essential accessory for any portable AC unit owner.