- Flush mounted aluminium sliding window with fly screen. Ideal for basements, opens to provide natural light and ventilation while the fly screen keeps insects out. Improves room usability and air quality. Widely used in home, basement, bathroom, garage, living room, kitchen, playhouse, hut, roof gallery, shopping mall, shed, chicken coop and barns. - Lockable aluminium sliding window frame. The 8 cm thick aluminium alloy frame is waterproof, durable and practical. The window can be locked and opened downwards, with smooth opening and closing. Suitable for indoor and outdoor use and able to withstand harsh weather conditions. - 5 mm tempered glass window. Made with 5 mm tempered glass, which is impact resistant, robust, and durable. Tempered glass offers better sound insulation than conventional glass. - Adjustable sizes for ventilation windows. If your desired size is not listed, we can customize. Just provide the width and height of your window opening and we will take care of the rest. - Use scenarios. Basement ventilation with insect protection; bathroom or kitchen areas that require good airflow and light; garden sheds, chicken coops, barns or garages that need durable, weatherproof ventilation.