This Featherlite 4 foot industrial platform Step Ladder has a 375lb load capacity, rated CSA GRADE IAA. It features a slim, gapless slip-resistant platform with a top rail guard. This ladder is equipped with heavy-duty gusset bracing, heavy-duty slip resistant boots, wrap-around spreader braces, and riveted step construction. The Featherlite 6504-AA platform Step Ladder meets or exceeds the safety standards set by CSA, CSA, and OSHA.