Heavy-duty construction: Made with a galvanized cover and aluminum alloy frame featuring 7.5 cm wide reinforcing bars, this roof hatch provides robust durability to withstand storms and daily wear, ensuring long-lasting protection for your space. Effective sealing and easy operation: Equipped with built-in rubber sealing strips that tightly seal seams to block rainwater infiltration, and a rotatable handle for effortless one-handed opening and closing, enhancing convenience and energy efficiency. Versatile appliions: Suitable for various uses including attic skylights, basement exits, emergency escape routes, wells, cellars, and manhole covers, serving as a multifunctional guardian for safety and convenience in diverse settings. Customizable sizing: Offers customization options if standard sizes don't meet your needs; simply provide the required hole dimensions to receive a tailored hatch that fits your specific installation requirements perfectly. Simple installation process: Designed for easy setup with just four straightforward steps—positioning, fixing, and sealing—requiring no complex tools, allowing even beginners to install it quickly and save time., Manufacturer: QSVPWNCBN