Stairmaster Jacobs Ladder 2Jacobs Ladder 2 is the lite version of the original Jacobs Ladder. Designed with the home user in mind, the lite machine is built narrower enabling it to easily fit through a standard doorway, making it perfect for the home user or the smaller commercial environment. Get the same workout and reliability supplied by the original Jacobs Ladder climbing cardio machine with a narrower width, shorter height and a steel rung design. Specifications Width: