Threelayer protection for outside window air conditioners Construction: 420D Oxford fabric outer layer, pearl cotton middle layer, and aluminum foil inner layer. These materials combine durability, cushioning, and reflective insulation to protect the outdoor AC unit from weather exposure. Primary benefit: Reduces cold air penetration and limits warm air loss through the window opening, helping keep your home warmer in winter. Fit and compatibility Designed to suit outside window AC units with or without an AC bracket. Can be trimmed to accommodate an AC bracket or unusual window mounting configurations. Secure installation Includes two metal buckle straps for fastening the cover in place. The straps hold the cover secure and help prevent it from blowing away in wind. Practical performance and use Weather protection: shields the outdoor unit from rain, snow, and debris during bad weather. Insulation: helps block drafts and reduce heat loss through the window opening when the AC is not running. Versatile for offseason and shortterm protection: appropriate for winter storage periods, storm protection, or whenever the outdoor unit is exposed and you want to minimize airflow and element exposure. What's included One threelayer insulation cover (420D Oxford fabric / pearl cotton / aluminum foil) Two metal buckle fixing straps Notes The cover is intended to fit most standard outside window AC units; cuttofit adjustment is possible if an AC bracket interferes with placement. Materials and included straps are specified to provide both insulation and a secure fit without altering your AC unit.