Fengze Heavy-Duty Aluminum Roof Access Hatch (28" x 28") Roof Hatch Can Be Opened Inside and Outside (710 x 710 mm)

• Size：the size of the hole：28x28inch/710x710mm Weight: 63lb
• 【Durable Structure】The main frame is made of aluminium. Both the cover plate and the frame are made of (2mm) aluminum.
• 【Security Features】It can be opened inside and outside. Inside, the lock can be released by handle operation. The external test is equipped with a lock catch, and the cover plate can be opened by pressing the switch.
• 【Surface Treatment】Aluminum Mill finish and film coating treatment, corrosion resistance and salt spray resistance.
• 【Cover Plate】Built-in 3-inch (75 mm) concealed polyisocyanurate insulation layer (R value over 20); Four corners are fully welded; The interior is reinforced by reinforcing ribs, which can bear a live load of 40 PSF (195 kg/m).
• 【Versatile Access】This roof hatch includes a high curb and wide flange for securing hatch to roof deck. Equipped with 2 hydraulic support rods, the cover can be easily opened or closed. Provide the convenient access for maintenance, repairs, and installations on rooftops.