Werner SSF03 375-Pound Load Capacity, Type IAA Duty Rating Fiberglass Step Stand, 3-Foot 3-foot non-conductive fiberglass rails, 375-pound load capacity, Type IAA duty rating, step stand Heavy duty 9" x 14" top provides large standing surface Broad, 6" steps feature deep treads for slip resistance; extra large feet for use on gratings Very durable and stable locking steel spreader permanently stays open (i.e., step stand will not fold/collapse shut) Ability to stand on the top; designed for one-person jobs; maximum standing height of 30"