Flexible adjustment Offers 155 standard-size options and fully customizable customization to fit your opening. Features a sliding aluminum frame with integrated screen and a two-track sliding system for efficient ventilation, improving room air quality in basements or enclosed spaces. Durable materials 4.3 cm wide aluminum alloy frame and 5 mm tempered glass combine lightweight design with strength. The frame resists deformation while the glass provides impact resistance, transparency, and durability for lasting protection and natural daylight. Easy installation Includes tempered glass panels, screw sets, and an installation guide for straightforward setup. Designed for quick installation without complex tools, it can be embedded in openings and secured with screws and foam adhesive, and is manageable by a single person due to its light weight. Efficient ventilation Two-track sliding system operates smoothly, allowing the sash to stop at any position for precise airflow control. Improves natural air circulation in summer and offers insulation in winter for year-round comfort. Use scenarios Basements or enclosed spaces requiring improved air quality and daylight with controllable airflow. Living areas such as bedrooms or offices where adjustable ventilation and natural light are beneficial. Utility rooms, garages, or other openings where quick, tool-free installation and secure, adjustable ventilation are advantageous.