This Louisville Elite Series aluminum attic ladder has a working load capability of 375lbs. This aluminum attic ladder fits ceiling heights of 7' 8" to 10' 3" and has a rough opening of 22.5" X 54". The Elite AA2210 attic ladder features slip resistant cross-tread steps, adjustable shoes, an advanced cylinder design, and an ergonomic T-handle. The Louisville AA2210 aluminum attic ladder meets or exceeds the safety standards set by ANSI.