... : Extended lengthD: Space between rungsE: Ladder widthF: Width at basefolding aluminum ladder with joint 5 steps Specification: Model#5100251003510045100551006Sec x Rungs per ... ;Very versatile - can be used as leaning ladder, stepladder, stairwell ladder, scaffold, standoff ladder, work platform, and work bench, etc;Compact ... base;Offers real value for money; folding aluminum ladder with joint 5 steps