20' LOUISVILLE L-2324-20 ALUM EXT LADDER T-III 200# | This Louisville 20 ft aluminum extension ladder has a 200 lb load capacity, rated ANSI type III. 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 also is equipped with D-shape rungs fully serrated for a slip-resistant surface, mar-resistant rail end caps, rope and pulley and slip-resistant rubber feet.