Aluminum Frame Galvanized Sheet Roof Access Hatch with Cover Plate, Loft Attic Ventilation Roof Hatch Vent Access Door, Switch Type Handle Skylight Hatch for Wellhead Lid, Cellar Cover & Roof Attic Op

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

• Noise-Free Operation: The loft ventilation roof access hatch cover plate includes a sealed rubber gasket at contact points to minimize noise caused by friction. This ensures quiet and smooth opening and closing, while effectively blocking rain, dusts, and debris from entering through spaces.
• Versatile Applications: This roof safety door serves as an attic skylight, escape route, basement exit, emergency access point, shaft cover, cellar, or inspection port. Ideal for residential, industrial, commercial, and educational installations, installation is quick and secure.
• Enhanced Safety Features: The attic skylights roof hatch vent access door is equipped with a 90-degree rotating handle for effortless use. The internal lock can only be operated from inside, enhancing safety, while two gas struts provide cushioning and support for safe lid opening up to 90 degrees.
• Enduring Structure: The skylight roof caps are crafted from thick galvanized steel plate and aluminum frame, featuring a 7.5cm (2.9in) central reinforcement for enhanced weight capacity and long-lasting strength. Designed for indoor or outdoor use, it withstands harsh weather and heavy usage.
• Easy Installation: The rooftop hatch cover plate comes with four mounting holes and expansion bolts for concrete structures. For wood installations, self-tapping screws can be used. For added waterproofing, seal the spaces with stick for a secure fit.