TYPE IAA – 375 LBS. DUTY RATING. Special-duty professional color code black. Orange non-conductive side rails. Non-conductive rail shields. Extruded heavy-gauge aluminum tool tray top. Slip-resistant traction-tred steps. Steps are knee-braced and triple riveted. Heavy-duty 1″ inside spreader bars. Top size 7″ x 14″. Front rails 3-3/8″ wide. Rear rails 2″ wide. Steps 3-1/4″ wide. Length 10.