General description This Portable Air Conditioner Window Seal features a universal coupler and a 100% sealing effect. Its innovative external anti-mosquito round interface design ensures a perfect fit for the hose interface, effectively blocking heat and preventing rain from entering. With a maximum perimeter of 300 cm, it is suitable for bottom hung, skylights, and casement windows (not for sliding windows). This versatile seal is compatible with portable air conditioners, dryers, exhaust dryers, and dehumidifiers, allowing you to enjoy a cool and comfortable summer regardless of the type of air conditioning unit used. Technical specifications Maximum perimeter: 300 cm Material: Nano polyester with double stitching Nylon Sticker thickness: 2 cm Measurement allowed error: +/- 1-3 cm Installation No drilling or tools required for installation. Steps to install: 1. Wipe the window frame clean (ensure no water damage). 2. Stick the sticky side of the Nylon Sticker on the window frame. 3.