Year-round energy savings: Combines precise sealing technology to stop air leakage, reducing annual energy consumption. Includes a flexible frame adjustment mechanism for seamless integration and consistent results. Efficient environmental protection: Resists wind and pollen with a robust construction that supports stable temperatures and minimizes noise, creating a quieter living or working space. Fast and simple installation: Preassembled side walls enable easy mounting on clip-on or flat windows, allowing setup in minutes and straightforward maintenance. Climate stabilization plates: Double-layer insulation blocks heat transfer, stabilizes the room climate, and reduces the load on air conditioning components, helping extend system life. Use scenarios: - Apartments or homes with clip-on or flat windows seeking year-round energy efficiency and comfort. - Small offices or commercial spaces that require quiet operation and stable temperatures. - Seasonal or rental properties needing quick installation and reliable insulation between tenants.