Double seal window insulation: With a double seal design, the anti-cold window seal can more effectively block the smallest air infiltration for 30% heat gain and to reduce heating costs. Flexibility to use: Thanks to a special shape and 30% compression, the front door seal provides great flexibility, suitable for various frame shapes and window types and seals gaps from 0.2 to 7.5 mm, and as a door bottom seal it can cover up to 20 mm gap. 2 self-adhesive tapes: The self-adhesive window seal insulation with two self-adhesive tapes can provide better sealing performance, and after removal it leaves no adhesive residue, can adapt well to all types of material surfaces, and the window seal is strong and durable, the lifespan can reach 8 years. Easy installation: Insulated door seal for windows, easy to cut, you can install it in minutes. Simply clean the surfaces around the windows, cut the insulation seal to the desired length and then apply it. Versatility: Insulating front door seal can block dust, against light, rain, insects and eliminate the sound of closing. The anti-cold window insulation is suitable for sliding windows, bay windows, glass doors, PVC doors, aluminum doors, wooden doors, sliding doors, cabinet doors, security doors, etc.