Foam Block for U-Shape Window Air Conditioner Units, 2 Pack Insulation AC Side Foam Panels with Weather Seal Strip, Prevent Cold and Hot Air Leakage, Winter Summer: HOXHA window AC side foam blocks are specially designed for U shaped air conditioners and are compatible with all U-shaped air conditioners.PREMIUM MATERIAL: Our window air conditioner foam blocks are made of high-quality foam materials, which is strong and durable for long-term use.ENERGY-SAVING & EFFICIENT: Seals the gap between the AC unit and the window frame, blocks hot air in the summer, and blocks cold air from entering the rooms in the winter, reducing heating and cooling costs, saving your lots of money.EASY TO INSTALL: The U shape window ac foam block is easy to use and install. You can effortlessly cut the foam block with a knife to fit the size of your opening size (knife not included).WHAT U GET: You will get 2 AC side foam panels, 1 insulating foam strip to better seal.