[UNIVERSAL ADAPTER] - The portable air conditioner window vent kit consists of 4 panels, each panel is 43 cm long and the adjustment range is 43-152 cm. It is suitable for horizontal or vertical windows with a length of 43-152 cm. Suitable for all air conditioner exhaust hoses with a diameter of 13 cm. Perfect for most brands of portable air conditioner hose. [UPGRADED SEAMLESS DESIGN] - Based on customer feedback, we have upgraded the plate edge design, the horizontal line to the sliding door without gaps, no more sealing tape needed. Slide the plates easily and fit your door perfectly to achieve good sealing performance, which not only keeps your room always fresh without fresh air leaking, but also prevents hot air from entering. [DURABLE MATERIAL] - The window ventilation kit is made of durable SG1-A PVC materials, high density and heat-resistant, which will not deform after years of use. Simple and stable fixing method, easy to install and disassemble. Convenient storage, space saving, suitable for use at home or in the office. [HIGH COMPATIBILITY] - Suitable for vertical or horizontal sliding windows, RV windows or sliding doors, and cannot be used with casement windows. You can use a 2-plate combination, a 3-plate combination or a 4-plate combination according to the size of the window. It is very convenient to use anywhere.