Straight Ladder Ladder Height 20 ft Overall Width 18 1/4 in Material Aluminum Load Capacity 300 lb Number of Rungs 20 Top to Bottom Rung 19 ft Rung Dia 1 1/4 in Rung/Step Spacing 12 in Rung Width 18 in Top Step Height 20 ft Rung Shape D-Rung Standards ANSI ANSI Type IA Net Weight 43.5 lb