BXI AC Window Seal Foam Panel with Aluminum Foil - 16.5" x 39" Self-Adhesive White PEF Closed Cell Insulation Foam, Waterproof Air Conditioner Unit Side Surround Board for Indoor Outdoor Gap Cover

SPECIFICATION Dimensions: 16.5"(H) x 39"(W); Thickness: 0.4"; Material: PEF polyethylene closed-cell foam with aluminum foil surface; Adhesive Backing: Yes (for easy installation); Compatibility: 5000-12000 BTU window air conditioners; Temperature Range: -50 ~ 120; Weight: 0.37 lb; Thermal Conductivity: 0.028 W/(mK) | DUAL THERMAL INSULATION & ENERGY SAVINGThis window AC side panel features dense closed-cell foam with a high R-value that effectively blocks heat transfer. Its aluminum foil surface reflects radiant heat, providing further thermal insulation. Simply seal the gaps between the AC and window to maintain room temperature, save energy, and reduce air conditioning costs | ALL-ROUND SEALING & INSULATION PROTECTIONThis insulation foam roll features a self-adhesive design and can be easily trimmed to fit window AC units of various sizes. It ensures a perfect seal that prevents airflow, dust, and pests from entering your home. The high-density closed-cell foam is well-known for excellent soundproof performance, blocking both noise and light intrusion to create a quieter, more comfortable indoor environment | DESIGNED FOR BOTH INDOOR & OUTDOOR USEThis AC side padding excels in any environment. For indoor use, it features eco-friendly, non-toxic, odorless materials and an easy-clean aluminum surface. For outdoor use, it provides waterproof protection against rain and moisture, plus exceptional resistance to aging, corrosion, and UV damageensuring years of reliable performance | EASY TO INSTALLSimply measure the area, cut the foam sheet to size, peel off the adhesive backing, and press it firmly into place. The process requires no complex tools, making installation quick and straightforward for anyone