Multi purpose ladder,aluminum ladder,step ladder 1) multi purpose ladder 2)3-position hinge allows for 18 positions or applica Multi purpose ladder,aluminum ladder,step ladder specifications:3-position hinge allows for 18 positions or applications1. Double stepladder2. Stepladder3. Stairwell ladder4. Multi-shelf5. Stand-off ladder6. Fully extended straight ladder7. 1/2 & 3/4 length straight ...