Company Gateway
Asia [English]Global Reach

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.


  • When used as a double stepladder, the maximum load per side, including person and materials, shall not exceed the duty rating of ladder
  • 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

Performance Overview

StyleSizeReach HeightLoad CapacityType
Single-Sided4 ft -- 16 ft8 ft -- 20 ft300 lbs -- 375 lbsType IAA Duty Rating



Model No.SizeReach HeightMaximum Standing HtLoad CapacityApprox. Cu. Ft. Per UnitApprox. Spread
4044 ft8 ft1 ft11 in375 lbs4.830-1/8 in
4066 ft10 ft3 ft10 in375 lbs8.142-7/16 in
4088 ft12 ft5 ft9 in375 lbs12.254-3/4 in
41010 ft14 ft7 ft8 in375 lbs1767 in
41212 ft16 ft9 ft7 in375 lbs22.579-3/8 in
41414 ft18 ft11 ft6 in300 lbs28.291-11/16 in
41616 ft20 ft13 ft5 in300 lbs34.7104 in

Type IAA duty rating is for stepladders up to 12 ft