MATERIAL - 1’’ thick insulating foam covered in white flexible vinyl FITS WINDOW SIZES- Fits windows 36’’ - 40" wide, panels must be cut to size with scissors COVERS THE EXISTING PULL OUT PLASTIC SIDES THAT COME WITH AC - DOES NOT REPLACE THEM COMPOSED OF 3 PIECES- 2 side panels with adhesive flaps to connect to AC, 1 long top panel with adhesive flaps that connect to the side panels and AC forming a built-in clean design HELD IN PLACE- panels must be cut to fit snuggly in place between window frame and ac, the adhesive flaps attach to the ac only Breeze Stop insulation keeps hot air out in the summer, cold air out in the winter, and helps mitigate noise and light. PATENTED Breeze Stop Surround Window AC Insulation is composed of three panels that connect around a window AC to provide both insulation and a clean built-in look. The side panels can be cut to size with a scissors and have an adhesive flap that connects the panels to AC. The top panel form fits the top of the AC to provide insulation in areas that no other foam panels currently available on the market do. Although all the panels have adhesive flaps to connect to each other and the window AC the panels should stay in place without applying the adhesive as well. This allows for super easy removal without leaving over any residue on the AC from the adhesive. At BreezeStop we are committed to finding new and innovative ways to improve home insulation and help conserve energy. Our products are patented.