Trestle ladder: This ladder is akin to the step ladder in how it folds for storage and is deployed. It is also available in lengths up to 20 feet.

Putnam Rolling Ladder Co. in Hoboken, New Jersey, has been in business since 1905 and is the oldest company producing rolling ladders in the United States.

These guidelines apply to four primary portable ladder types: step-ladders, straight ladders, extension ladders, A-frame ladders, and extension trestle ladders. A step-ladder is a self-supporting ...

Walmart is selling the Ktaxon Step Platform Folding Scaffold Ladder for $110. It’s lightweight, ... including scaffolding, a trestle, a straight ladder, a step ladder, and more.