Emergency Escape Ladder, For Maximum Window Thickness 11 in, For Minimum Window Width 16 in, Load Capacity 1,000 lb, Number of Stories 2, Overall Length 13 ft, Features Anti-Slip Rungs, Attaches to Most Common Windows, No Tools or Assembly Required, Tangle Free, Includes Window Mount, Manufacturer Warranty Length 5 yr, Mount Type Attachment Hooks, Overall Width 8 1/4 in, Rail Material Nylon, Step Material Metal