13', Aluminum, Type IA Multi-Purpose Ladder, 300 LB Duty Rating, Advance Ergonomic Heavy Duty Polymer Spring Loaded L-Locks, 10% Deeper Step Surface, 4 Rivets For Extra Strength, Top Cap, Multi-Positioning, Meets OSHA, CSA & ANSI Standards, Snap Lock Hinge, 1 Man Set Up, Heavy Duty Locking Pins, Will Work As A 3'-5', Step Ladder, 7'-11', Extension Ladder, or 1'-2', Scaffold, Extra Wide Flared Bottom For Security, Features A Telescoping Design For Maximum Versatility.