Louisville Ladder AL258P Stair, 25-Inch Opening ROUGH OPENING DIMENSIONS: 25.5-by-63-inches CEILING HEIGHT: Fits 10-foot to 12-foot high ceilings STURDY AND SAFE: Able to hold up to 350 pounds, and its heavy-duty hinges, adjustable feet and an insulated door provide long life and improved functionality SUPERIOR STABILITY: Metal hinges limit side to side motion QUICK INSTALLATION: The installation kit contains the exclusive EZ hang strap system, plywood shims, 8-7/8 roofing nails, aluminum feet, door and instructions for a quick and easy installation MEETS OR EXCEEDS STANDARDS: The ladder meets or exceeds the safety standards set by ANSI, American National Standards Institute and OSHA, Occupational Safety and Health Administration