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. Made of high-strength stainless steel frame, this heavy-duty roof maintenance hatch door is durable and long-lasting. Adopting high-quality powder coating finish, suitable for roof hatch skylight needs and residential applications. Equipped with an 80 ° rotating handle and high-performance air column, the roof sunroof opens and closes smoothly and safely. This ergonomic design ensures easy access during maintenance or emergency use. This type of skylight integrates high-density insulation and airtight sealing for the skylight hatch. Whether you use it as a roof skylight for your home or a roof hatch cover for a commercial building, it can enhance indoor temperature control while preventing ventilation and moisture infiltration. This large skylight roof hatch is designed for versatility and supports various installations, including attic entrances, basement entrances, roof maintenance, or emergency exits. Whether you need customized dimensions or specific installation configurations, this sunroof access door can be customized to meet project specific needs., Manufacturer: WLH Alexanders