During the cold season, sunlight streaming directly into the room through skylights increases the heat storage temperature of the floor and walls, reducing the frequency of heating use and achieving passive solar heating. The main frame is made of high-quality aluminum alloy, with strong load-bearing capacity and light weight. The panel is made of aluminum alloy and coated with paint, which is not afraid of wind and sunlight. The 80 degree rotating handle can easily close and open the lid, making it easy to use. Locks can easily lock the interior and protect your property from unauthorized access. Each roof hatch cover is equipped with a built-in rubber sealing strip to prevent water from entering and ensure that your space remains dry during rain. Ventilation and lighting windows can provide effective ventilation and sufficient sunlight when opened. A large opening facilitates people to go out for repairs. Our roof skylight is easy to install and can be quickly completed in just a few minutes. This product has undergone rigorous performance testing and is suitable for extreme weather conditions, including cold, hot, humid, vibration, and impact. This aluminum alloy inspection port ensures convenient maintenance while preventing debris from entering and improving safety. Not only can it be used as an attic skylight cover, but it can also be used as an escape cover, basement exit cover, emergency passage cover, wellhead cover, cellar cover, and manhole cover., Manufacturer: WLH Alexanders