Energy Saving: Seal the gap between the AC unit and window frame, allowing cold air to be discharged into your house during winter and maintaining hot air during summer, reducing heating and cooling costs. Material: The window AC side panels are made of ABS and PVC, providing better insulation and wind resistance, and helping to eliminate noise. More Comfortable Life: Side Panels for Window Units with AC Keep your window clean and organized, improve your quality of life, and keep dust and harsh light out of your space. Easy to Install: Equipped with 2 pairs of window AC side panels with frames, no additional tools are required, just insert the frame into the window AC device to complete. Make Home Comfortable: AC window unit side panels are aesthetically pleasing and effectively insulate against pollen, dust, heat, and wind. Make your house more cozy.