Create a sealed environment by connecting sashes and windows, effectively blocking hot air inside and out, while eliminating insects and mosquitoes.Keep your room cooler for longer.EASY INSTALLATION: Window seals can be easily installed without drilling holes.Please measure the four sides of the window first, then purchase spacers larger than the perimeter of the window frame.Glue the frame and window first, then secure the joint with adhesive tape.Then open the zipper, pull the air conditioner duct through the zipper and out of the window, then tighten the zipper.Durable and Universal: Air conditioner window seals are made of high quality PVC with two durable YKK zippers.UV resistant, water resistant, rain resistant, suitable for all mobile air conditioners and washing machines, compatible with different windows (casement windows/blinds/sliding windows).Suitable for windows with a circumference less than 400 cm.Protect the environment: Passionate about protecting the environment and protecting the planet!This air conditioner window seal can effectively reduce energy consumption and carbon dioxide emissions, which is especially important in summer when air conditioners are heavily used.Air conditioning caulking kits are perfect for protecting energy and preventing global warming.Save on Electricity Bills: The portable air conditioner caulking kit prevents hot air from circulating around the room, reduces cold air leaks, and keeps your indoor temperature cooler and more stable.They can improve air conditioning efficiency and save you money!