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 25-1/2 in x 63 in. The Everest AL258P features slip resistant steps, adjustable shoes, hook and pole for door opening, easy-hang strap, and heavy-duty hinges.