The Little Giant Alta-One (Type 1) is a lighter duty version of the Type 1A "Original" Little Giant Ladder. It functions and operates the same as the Original 1A, only in a lighter rating. If carrying around a heavy folding ladder is a big concern, then consider the Little Giant Alta-One Wheels, as it"s the lightest Little Giant Ladder - now easier to move around with wheels. This is the big brother of the American Titan Ladder, by Little Giant. The amazing Little Giant Alta-One Wheels ladder has an equally amazing Lifetime Warranty.