description 4 ft. type iaa fiberglass twin ladder the werner® 4-foot fiberglass twin step ladder is type iaa, 375-pound load capacity on either side. made for jobs that require up to two workmen, one of its key features is the strong, pinch-proof internal spreaders. it also has triple-riveted and extra wide steps with traction-tred® that provides slip resistance. each step on the werner 4-foot fiberglass twin step ladder has a horizontally aligned cross-brace and knee brace. the heavy-duty step ladder is further strengthened by the edge® bracing system and aluminum top with side plates attached to each rail by four solid rivets. the non-conductive shields along the rails of the ladder provide reinforcement and increase the ladder's resistance to wear at the worksite or when in transit. glas*mark® violator markings ensure the ladder is clearly visible. the werner 4-foot fiberglass twin step ladder's fiberglass rails make the ladder safe for work near electrical hazards because they offer a non-conductive surface. california proposition 65 warning. features maximum reach height: 8-ft heavy gauge aluminum extruded top with thick side plates for solid support back-up aluminum plates reinforce all top connectors shoulder bolt and lock nut on top hinge; 4 solid aluminum rivets attach top to each rail slip-resistant traction-tred steps are double riveted and knee-braced for secure footing extra heavy-duty internal aluminum spreaders the edge bracing system helps to decrease damage to rail glasmark violator stripes on rails allow ladder to be more visible aluminum external rail shield helps protect against abrasion damage specifications acme tools brand name werner acme tools part number t7404 ansi approved yes ansi ladder rating type iaa assembled weight (lbs) 21.5 base spread (in) 36.13 base width (in) 21.5 california proposition 65 warning required no country of origin mexico csa certified no distance between rung/steps (in) 12.0 duty rating (lbs) 375.0 globaltradeitemnumber (gtin) 00051751011531 internal supplier part # t7404 internet product code (ipc) e7d7fd9ead8 ladder length (ft) 4.0 ladder material fiberglass ladder type step manufacturer warranty none meets ansi or osha standards yes number of steps 3 osha approved yes package depth 9 package height 48 package weight 21.5 package weight (lbs) 21.5 rung/step depth (in) 3.0 step color aluminum upc 051751011531 weight (lbs) 21.5