Features: 1.Good sealing: The panels are embedded in the window tracks and clamped to achieve a good sealing effect, which can keep your room cool and leak-free at all times, prevent hot air from entering and save electricity. 2.Sliding Window Seal Plate: The Air Condition Ventilation Kit features a user-friendly rail design that allows the seal plate to slide easily and lock quickly. Length adjustment can be done in 5 seconds without tools. Adjustable length range: 84-120cm 3.Durable Material: Window ventilation kits for portable Air Condition units are made of durable PVC material that is lightweight and easy to install and remove for use at home or in the office. 4.Universal: Designed for portable mobile Air Condition, clothes dryers, exhaust fans, hanging Air Condition and dehumidifiers for living rooms, bedrooms, bathrooms, kitchens, hotels, restaurants and commercial stores. 5.After-sales service: If you have any problem, please contact us immediately, we will help you solve it as soon as possible. Simple installation steps: 1. Install the screw and nut fittings on the outer plate for assembly, insert the oval metal piece into the track, and then tighten the nut. 2. Install one end of the exhaust hose on the connector of the portable air conditioner. 3. Install the other end of the exhaust hose on the connector of the board, and then install the connector to the board. 4. Secure the plate kit to the window and it is ready for use. Specifications: Material: PVC Size:Outer board length 67.5*10cm,inner board length 61.5*9.5cm Package List: 2 X Window Sealing Plate