Features: 1. UNIVERSAL UNITS: The window vent kit fits most portable air conditioning units with exhaust hose (5"/5.9" diameter optional). Ideal for most sliding windows, vertical or horizontal and sliding doors with adjustable height designs. 2. Reinforced Sealing: This window kit keeps your room cooler for longer and saves electricity bills. It effectively diffuses hot air out of the window while preventing warm air from circulating in your room. 3. Reusable: This window sealing kit is made of high-quality PVC, anti-extrusion, anti-aging, and can be used year after year. Take it out and store it when not in use to save space. 4. Easy to install: Easily screw the hose into the hole on the sealing plate, adjust the required length of the sealing plate to fit your window, stick the sealing foam tape on the window. Easy to store and save space for your home. 5. Package includes: 4 pcs window sealing plates, 1 pcs exhaust hose adapter (5"/5.9" diameter optional) and screw fittings, sealing tape. Please check your window size before purchasing. Note: 1. Due to different monitors and light effects, the actual color may be slightly different from the picture 2. Please allow 1-3cm deviation due to manual measurement Description: Material: ABS, PVC Size: as shown Adjustable length: 43~140cm (16.93"~55.1") Features: good sealing, durable, adjustable, easy to install Applicable models: Type A is suitable for all portable air conditioners with an outlet diameter of 13cm/5". Type B is suitable for all portable air conditioners with an air outlet diameter of 15cm/5.9". Simple installation steps: 1. Install screw and nut accessories on the outer panel for assembly, insert the oval metal sheet into the track, and tighten the nut. 2. Install one end of the exhaust hose to the joint of the portable air conditioner. 3. Paste the sealing foam tape at the seam between the window and the sealing board. 4. Install the other end of the exhaust hose at the joint where the plate is connected to the part, and install the joint on the plate. 5. Fix the board kit on the window and use it. Notes: 1. Please check the height of your window or sliding door before buying. 2. Please check the diameter of the hose before purchasing. 3. Please allow slight size difference due to different manual measurement. includes: 4 x Window Sliding Kit Boards 1 x Exhaust Hose Adapter (5"/5.9" optional) 1 x Sealing Tape 4 screws