Improved Cooling Performance: Window sealing guides warm air to spread through the window.through a portable, trapped air conditioning pipebetween the window frame and the window itself, effectively reduce air leakage, cold air and keep your room cool. Sealing kitMulti-functional windows: seal fabrics used for center pivot windows can create a sealing space, to deny hot air and keep out insects, mosquitoes and humidityto enter.The windows are fully functional and can be closed/opened as usual. Drill bit installation: Simply install the self-stick velcro on the side of the drill bit.inside the window seal frame, then connect the sealing kit to the window seal.from the central pivot roof window to the Velcro.You can complete the installation without drilling.After installation correctly, you can easily close the window by taking two fabrics from the tape. Save energy and money: the center pivot window seal kit helps save energy and money.reduce energy consumption and improve efficiency.Reduce carbon dioxide emissions, not only protecting the Earths environment, but also reduces your electricity bills.Due to the large quantityof air conditioners, this is particularly important in summer. Wide application: central dense fabrics are suitable formost portable air conditioners, air conditioning machines,Dry clothes and dehumidifiers, but they are mainly used in the center pivot roof window.