Stepladder, Material Aluminum, ANSI Type IA, Ladder Height 11 to 21 ft, Load Capacity 300 lb, Number of Steps 11 to 19, Base Spread 186 in, Bottom Width 43 in, Step Depth 1 in, Step Tread Ribbed, Series SkyScraper, Includes Instruction Manual, Standards ANSI, CSA Certified, Rung/Step Spacing 12 in