Extension Ladder Material Aluminum Industry Ladder Size 24 ft Extended Ladder Height 21 ft ANSI Type IAA Load Capacity 375 lb Adjustable Increments 12 in Bottom Width 19 1/16 in AE1200HD Series Rail Type I-Beam Shoe Design Swivel Includes Quicklatch Runglock System Outside Slide Gides Mar Resistant Rail End Caps Rope and Pulley. All The Necessary Warning Caution Danger and Instruction Labels Model/Duty Rating Label Rung Shape D-Rung Closed Height 12 ft Section Length 12 ft