Extension Ladder Material Fiberglass Industry Ladder Size 24 ft Extended Ladder Height 21 ft ANSI Type IAA Load Capacity 375 lb Adjustable Increments 12 in Bottom Width 18 1/2 in Aero Series Rail Type BoxLok Non-Conductive Fiberglass Shoe Design Dual Action Rung Shape Tri-Rung Closed Height 149 in Section Length 12 ft Net Weight 47.9 lb Rung/Step Spacing 12 in