Universal: Suitable for all portable air conditioners and tumble dryersregardless of manufacturer. Whether for windows that open to the left or windows that open to the right, bottom hung windows or skylights, it will do the job. Fits window with a maximum perimeter of 300CM . Easy To Install And Use: You don't have to buy window kits, adapters for your hose or additional tools. Simply apply the adhesive hook tape to the inside of your window frame and to the window itself. Attach the window seal to the hook tape. Then, Put the air conditioning pipe into the hole, and finally tighten the hose with a shrink rope. Simple as it is. Energy Saving: Window seal for portable air conditioning is made of durable nylon material for easy sashing slide. Push through the tube, pull the shrink rope and the heat stays outside. This practical airlock prevents the warm exhaust air from returning into the room. The windows can be closed easily when leaving. There is no need to disassemble. Wide Application: Window seal for portable ac units suitable for portable mobile air conditioners, dryers, exhaust dryers, and dehumidifiers. The airlock window seal is only suitable for commonly-used tilting windows or wings. It is suitable for a turn-tilt skylight product , casement window, and a balcony door that opens outwards. But unable to use it on a Left and right sliding window or door. Innovative Design: Designed with shrink cords, this one does a great job of reducing air circulation and preventing heat from entering in the summer. The zipper design will have holes and gaps that cannot trap air. Ours is an innovation that can better achieve warm in winter and cool in summer color: White Quantity: 1Pc Note: Differences in light and screen settings, the actual color may be slightly different from the picture