Elite Series, Aluminum Framed Attic Ladder provides improved squareness and predrilled holes for ease of installation. Designed for attic openings of 22.5 in. x 54 in., fit ceiling heights from 7 ft 8 in - 10 ft 3 in. Gas piston system allows easier and smooth opening and closing door. This attic ladder has a working load capacity of 375 lbs. Lighter aluminum frame with pre-drilled holes for easier installation,375 lbs. duty rating affords safety and heavy-duty quality, Adjustable shoes fits heights 7-ft 8-in to 10-ft 3-in. ANSI certified signifies this attic ladder is safe. Slip-resistant cross-tread steps deliver steady footing and more comfort when ascending and descending.