60 ft. Aluminum Extension Ladder with 450 lbs. Load Capacity Type I Duty Rating.This 60 ft.3-section ladder features full I-beam construction for a more stable connection and to prevent twisting, round-shaped rungs, double rope, and pulley, aluminum cast rail end caps, and swivel safety shoes to be used with the tread down or in spike position. The Louisville AE1660 aluminum extension ladder meets or exceeds the safety standards set by ANSI and OSHA.I also have a 40 ft. Aluminum Extension Ladder for $250, and a 36 ft. Louisville Aluminum Extension Ladder for $150.