This Louisville 24 foot aluminum extension ladder has a 225 lb load capacity, rated ANSI Type II. It is equipped with the MAXLOCK rung lock, custom engineered from a patented, advanced molecular polymer, MAXLOCK is the strongest, toughest, lightest rung lock ever made. This ladder includes the patented ProGrip slip resistant tread integrated onto the ladder caps to protect the work surface from damage. QuickLatch RungLock system that provides a simple, intuitive method of securing the fly and base sections of the ladder when extended. This ladder also features outside slide guides, D-shape rungs fully serrated for a slip resistant surface, rope and pulley, modified I-beam for a more stable connection and to prevent twisting, and swivel safety shoes to be used as tread down or in spike position. The Louisville AE4224PG aluminum extension ladder meets or exceeds the safety standards set by ANSI, CSA, and OSHA.