This Werner 10 ft. x 22-1/2 in. x 54 in. Wood Attic Ladder with 250 lb. Maximum Load Weight Capacity fits ceiling heights from 8 ft. to 10 ft. and standard ceiling opening of 22-1/2 in. x 54 in. This sturdy wood ladder features 9 non-slip steps and a convenient handrail for climbing safety. It can support up to 250 lb.