Trust your home to the industry-leader with Century's Supreme Aluminum Series of folding attic stairways. With safety in every step, it is the most durable solution on the market that also boasts an aesthetically pleasing design. Engineered for residential use, it offers a hefty 350-lb. load rating, a rough opening of 25-1/2 in. x 54 in., adjusts to ceiling heights between 7 ft. 8 ft. 9 in., and utilizes landing space of 68 in., and a minimum clearance-projection space of 70 in. It is manufactured with heavy-duty, rust-resistant aluminum stairs and stiles. Ultra-sturdy and lightweight, the smart tri-fold design delivers ease of use, backed by double-riveted construction for added safety and performance. Taunt bracing provides the reinforcement needed for confident footing. The adjustable foot extension and the pivotal floor pad make this fully-assembled model ready for quick and easy installation. All Century attic stairways are independently certified to meet ANSI safety standards.