This Louisville Everest Series aluminum attic ladder has a working load capability of 350 lb. This aluminum attic ladder features an R3.8 insulated door and multiple handrails for added comfort, safety and stability. this attic ladder fits ceiling heights of 10 ft to 12 ft and has a rough opening of 22-1/2 in x 63 in. The Everest AL228P features slip-resistant steps, adjustable shoes, hook and pole for door opening, easy-hang strap and heavy-duty hinges.