Roof Access Hatch Loft Ventilation Aluminum Frame Galvanized Sheet Attic Skylights Roof Hatch Vent Access Door with Switch Type Handle for Wellhead Lid Cellar Cover

Specification:Origin: Mainland ChinaMaterial: galvanized steel plate, aluminum alloyColor: GreySize: Base inner diameter 800*800mm, base outer diameter 850*850mm, cover outer diameter size 910*910mmNote:Due to different monitor settings and lighting conditions, the actual color of the item may vary slightly from the pictures. Thanks for your understanding!Please allow a 1-2 cm difference in measurements due to manual measuring.Package includes:1 x Roof Hatch4 x Screws

• Sturdy Durable Structure：This roof access hatch is made of thick galvanized steel plate and aluminum frame with 7.5cm central reinforcement, enhances weight capacity and long term strength, suitable for indoor outdoor use and can resist harsh weather conditions.
• Noise Free Sealing Design：Built with sealed rubber gaskets at contact points, this loft ventilation hatch reduces friction noise for quiet smooth opening and closing, and effectively blocks rain dust and debris from entering inside.
• Safe Humanized Operation：Equipped with 90 degree rotating switch type handle and internal lock that can only be operated from inside, two gas struts provide cushioning and support for safe 90 degrees lid opening.
• Easy Quick Installation：Designed with four mounting holes, this roof hatch cover can be installed with expansion bolts on concrete structures and self tapping screws on wood, sealed with stick for better waterproof performance.
• Wide Multiple Applications：This roof vent access door can be used as attic skylight escape route basement exit inspection port wellhead lid and cellar cover, ideal for residential industrial commercial and educational places.