500CM Window Seal Kit, Universal for Portable Air Conditioner

【Full Seal】Features an upgraded full-edge sealing structure to perfectly fill all gaps between open windows and air conditioner exhaust pipes. It completely isolates outdoor hot air, dust and moisture, stably locks indoor cold air, and solves the problems of slow cooling and unstable temperature in large spaces. 【Power Saving】Optimizes the air circulation of portable air conditioners and avoids cold and hot air convection caused by window gaps. It improves overall cooling efficiency, effectively reduces long-term power consumption, and lowers household energy costs in summer. 【Tough Material】Adopts thickened high-density polyester material with composite reinforced PU coating for improved tensile and tear resistance. The premium material resists strong UV rays, wind, rain and dust erosion, ensuring no aging or fading after long-term use. 【Reusable Use】The soft and washable fabric supports repeated cleaning and seasonal reuse without frequent replacement. Tool-free quick disassembly and foldable design save storage space. Equipped with upgraded cable ties and high-adhesive tape for firmer and longer-lasting fixation. 【Large Coverage】Designed for oversized windows with a perimeter ≤ 500cm, covering more window sizes than ordinary models. Widely compatible with mainstream portable air conditioners, ventilation dryers and exhaust equipment, suitable for large apartments, villas, offices and commercial spaces.