Metal Boat Storage Security Door, Aluminum Roof Access Hatch Lid Multiple Size Options for Shafts, Roofs, Terraces, Vents(50x50cm/19.69x19.69in)

Brand：HSOQNAs a professional building access solution, this roof hatch cover performs well in load-bearing performance, all-weather protection, and ease of installation, providing reliable protection for all types of buildingsProduct 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 measure the opening accurately before installation and leave a gap of 1 to 2 cm around for installation2. In case of extremely cold weather, please check whether the sealing strip is frozen. Do not force it to open before thawing to avoid damaging the sealing structure

• Sturdy and durable: Made of thickened aluminum alloy, the top cover is designed with reinforced ribs, and has a static load-bearing capacity of up to 30 kg. The structure is solid and stable and will not deform after long-term use
• Flexible size: We provide a variety of inner diameter sizes to choose from. The cover adopts a wide-edge design to effectively block rainwater. If there is no suitable size, we also support customization according to the size you provide
• Security Features: 90-degree swivel handle opens and closes lid easily, and lockable interior prevents unauthorized entry. They are all equipped with built-in rubber seals to prevent water from entering and ensure they remain dry on rainy days
• Wide range of applications: suitable for attic skylights, escape hatches, basement exits and other scenarios. It can also be used as escape hatch covers, emergency access covers, manhole covers, cellar covers, and manhole covers to ensure convenient access
• Convenient installation: Pre-set precise holes with expansion screws, just place the patio cover in the appropriate position, drive in the expansion screws to secure it firmly, and sealant can also be used to fill the gaps