folds to only 27 thick best seller! 8%" height lighter than steel supports up to 1000 lbs supports up to 500 lbs at two heights supports up to 1000 lbs supports up two heights independently adjustable-length legs legs lock in two positions for 3" or 8" step height heavy-duty aluminum with non-slip treads and no-mar leg tips supports up to 300 lbs 9"h beige folds to 10 supports up to 300 lbs sturdy plastic with skid-resistant surface red black no-slip rubber grips on feet and traction pads on capacity capacity assa supports up to 400 lbs folds to 3d outside your rv