【Strengthen sealing】 The design of seamless card slot is to connect the panels through embedded grooves, ensuring that the two sides of the connecting panel are straight and can be perfectly installed on the window track, achieving a tight sealing effect, maintaining a comfortable and cool indoor temperature, and saving energy. It effectively disperses hot air outside the window while preventing warm air from circulating in the room. 【Universal air conditioning and ventilation kit】 Suitable for portable air conditioners with a diameter of 5.1 inches, the window ventilation kit includes 4 plates, 2 diameter couplings, sealing tape, and screw fittings. There are two sizes of air conditioning ventilation kits for your reference. Please check the hose length according to your room needs. 【Sliding rail design】 The window sealing plate adopts a humanized track design, which is easy to slide the sealing plate. The sealing plate can be adjusted to the appropriate length according to the height of the window, and locked with butterfly nuts. The length can be quickly adjusted without tools. Suitable for most vertical and horizontal sliding windows. 【2-in-1 connector】 This latest air conditioning window kit is equipped with a 2-in-1 connector, with an inner buckle suitable for ventilation hoses with a diameter of 5.1 inches (clockwise or counterclockwise) and an outer buckle suitable for exhaust hoses with a diameter of 5.9 inches (counterclockwise or clockwise). 【Easy to install and disassemble】 Our window sealing panel is made of high-quality PVC, which has the advantages of high temperature resistance, non aging, non-toxic and pollution-free, and can be used year after year. No tools are required for installation and can be used at home or in the office. And equipped with a grille, it can prevent small animals or garbage from entering the air conditioning ventilation hose and damaging the air conditioning components., Weight: 0.5732018812 Pounds, Manufacturer: Highlandhue