This frame allows someone up to 6ft tall to walk easily underneath unobstructed. However this frame does not allow the same freedom of board placement as other sets. This can be a great base for any sidewalk scaffolding/shed set-up. Our 5ft x 6ft 4in walk-through frame meets and/or exceeds all OSHA regulations. This frame has one ladder rung and uses our gravity flip locks. To maximize the life and longevity of our scaffold frames we apply a Vibrant High Clarity Blue powder-coating.