Proudly Made in the USA, the Type 1A Little Giant Ladder System offers the versatility of 24 ladders in one - allowing it to be safely used on stairs, ramps, curbs, or other uneven surfaces. The 1A Little Giant Ladder System is made of heavy-wall 6005-T5 aluminum, and is rated to support 300 lbs (though it has been tested at 4 times that amount) and comes with a lifetime warranty.