This Louisville Fire-treated Everest Series aluminum attic ladder has a working load capability of 350lbs. 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' to 12' and has a rough opening of 25.5" X 63". The Everest FTAL258P features slip resistant steps, adjustable shoes, hook and pole for door opening, easy-hang strap, and heavy-duty hinges.