Basement Flat Roof Escape Hatch, Roof Aluminum Alloy Security Door 90° Opening for Shafts, Cellars, Roofs, Skylights(55x55cm/21.65x21.65in)

Brand：HSOQNThis thickened roof cover provides an efficient building access solution with high load-bearing and sealing properties, making it better suited for attic maintenance, basement entrances and exits, emergency escapes and other diverse scenariosProduct name: Aluminum alloy roof access coverMaterial: aluminum alloyColor: dark grayAluminum alloy thickness: 1.2mm/0.047inFunction: protection/security/anti-theft/energy savingFeatures: Strong, high strength, weather-resistant, anti-fadingInnovation: Hydraulic support rod/internal locking/cover wider than chassis (waterproof)Size: Provide common inner diameter sizes and support customizationPackage contents: 1×roof access cover, 4×boltsMeasurement tips: The inner diameter of the chassis ≥ the wellhead opening sizeBottom frame and cover frame: cover outer frame size = bottom frame inner diameter size + 11cm / 4.33inchThings to note:1. Please accurately measure the size of the hole before installation, and ensure that a 1-2 cm installation margin is reserved for the product all around2. Do not place heavy objects or stand on the surface of the cover. The maximum load-bearing limit is 30 kg. Overloading may cause damage

• Weatherproof skylight cover: The whole body of this skylight ventilation hatch is made of thickened aluminum alloy. It has a stable structure and is light in weight. It can easily cope with harsh outdoor environments such as severe cold, high temperature and humidity, and will not deform after long-term use
• Flexible size: Provides a variety of common specifications. If there is no suitable size, we can also customize it for you as soon as possible according to the size required by your actual environment to ensure a better fit for the building
• Secure Lockout: Aluminum Access Roof Covers are designed to provide convenient and economical access to the roof of a building. Equipped with an internal locking device that supports quick locking from the inside, effectively preventing illegal intrusion and ensuring the safety of roof access
• Sealing and energy saving: The door frame is equipped with high-performance sealing strips, which effectively blocks rainwater leakage, enhances indoor climate stability, reduces heat loss, and helps reduce heating energy consumption
• Quick installation: The design is user-friendly, with reserved holes, and the installation process is simplified. No complicated tools are required. Just place the cover plate in the appropriate position and fix it with the provided bolts