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T7400 Series Fiberglass Twin Stepladders

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The Werner T7400 series Twin Step Ladders feature a duty rating of 375lb per side of the ladder. Designed for one or two-person jobs, the T7400 ladders have heavy gauge aluminum tops and feature heavy duty internal spreaders to resist damage around the worksite or in transit. The GLAS*MARK® Violater stripes on the rails make the ladder more visible and the EDGE® bracing system and external rail shields add to the long lasting durability of these ladders. Fiberglass rails are non-conductive for working near electricity.


  • Heavy gauge aluminum extruded top with thick side plates
  • 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
  • Extra heavy duty internal aluminum spreaders
  • Rubber step bumpers to resist damage
  • EDGE® bracing system helps to decrease damage to rail
  • GLAS*MARK® Violator stripes on rails allow ladder to be more visible
  • Aluminum external rail shield helps protect against abrasion damage
  • Shoe pads riveted to the EDGE® structure
  • Every rivet backed up by metal, metal plates or washer to protect rails
  • Designed for one or two person jobs
  • When used as a double stepladder, the maximum load per side, including person and materials, shall not exceed the duty rating of ladder

Performance Overview

StyleSizeReach HeightLoad CapacityType
Twin4 ft -- 20 ft8 ft -- 24 ft300 lbs -- 375 lbsType IAA Duty Rating



Model No.SizeReach HeightMaximum Standing HtLoad CapacityApprox. Cu. Ft. Per UnitApprox. Spread
T74044 ft8 ft1 ft11 in375 lbs4.536-1/8 in
T74055 ft9 ft2 ft10 in375 lbs5.843-1/8 in
T74066 ft10 ft3 ft10 in375 lbs7.350-1/8 in
T74088 ft12 ft5 ft9 in375 lbs10.564-1/8 in
T741010 ft14 ft7 ft8 in375 lbs14.278-1/4 in
T741212 ft16 ft9 ft7 in375 lbs18.392-1/4 in
T741414 ft18 ft11 ft6 in300 lbs22.8106-1/4 in
T741616 ft20 ft13 ft5 in300 lbs27.7120-1/4 in
T741818 ft22 ft15 ft4 in300 lbs33.1136-1/8 in
T742020 ft24 ft17 ft 3 in300 lbs38.8150-1/8 in

Type IAA duty rating is for stepladders up to 12 ft