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400 Series Aluminum Single Sided Stepladders

>Series Callout
The aluminum 400 series of Step Ladders has a duty rating of 375 pounds and features heavy gauge TOOL-TRA-TOP®s. All steps are knee braced and the TRACTION-TRED® steps are slip resistant. The rear rail is a full U channel and a full set of rear horizontals are spaced one per foot. The 14' and 16' models carry a duty rating of 300 pounds.


  • Heavy gauge Tool-Tra-Top™ with thick side plates
  • Shoulder bolt and lock nut on top hinge; 4 solid aluminum rivets attach top to each rail
  • All steps are knee-braced
  • Slip-resistant Traction-Tred® steps are double riveted to rails for durability
  • Heavy duty internal spreaders
  • Full set of rear horizontals spaced one per foot
  • Full U-channel rear rails
  • Full set of rear horizontals spaced one per foot
  • Slip-resistant foot pad
  • 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
Single-Sided4 ft -- 16 ft8 ft -- 20 ft300 lbs -- 375 lbsType IAA Duty Rating



Model No.SizeLoad CapacityTypeMaximum Standing HtReach HeightApprox. Cu. Ft. Per Unit
4044 ft375 lbsType IAA Duty Rating1 ft11 in8 ft4.8
4066 ft375 lbsType IAA Duty Rating3 ft10 in10 ft8.1
4088 ft375 lbsType IAA Duty Rating5 ft9 in12 ft12.2
41010 ft375 lbsType IAA Duty Rating7 ft8 in14 ft17
41212 ft375 lbsType IAA Duty Rating9 ft7 in16 ft22.5
41414 ft300 lbsType IA Duty Rating11 ft6 in18 ft28.2
41616 ft300 lbsType IA Duty Rating13 ft5 in20 ft34.7

Type IAA duty rating is for stepladders up to 12 ft