Our best seller! The Little Giant Type 1A ladder system offers the versatility of 24 ladders in one - allowing it to be safely used on stairs, ramps, curbs, docks, or other uneven surfaces. The Little Giant Type 1A system is made of heavy-wall 6005-T5 aluminum, is rated to support 300 pounds (though it has been tested to hold four times that amount) and comes with a lifetime conditional warranty. Plus, the addition of easy roll wheels makes your Little Giant easy to maneuver and store.