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D500-2 Series Aluminum Multi Section Extension Ladders

>Series Callout
The D500-2 aluminum extension ladders have a duty rating of 375 lbs and feature the exclusive ALFLO® rung joint for a TWIST-PROOF® performance every time. The end caps are mar resistant and notched for easy separation of sections. Both the base and the fly sections can be used separately. Internal guides increase the ease of operation when raising and lowering. The feet are heavy-duty, self-aligning and free swinging for hard or penetrable surfaces. Rugged spring-loaded locks operate smoothly. TRACTION-TRED® D-rungs are slip resistant. Duty rating changes to 300 lbs for 36 ft-48 ft models.


  • Exclusive Alflo® rung joint means Twist-Proof® performance
  • 1.75 inch slip-resistant Traction-Tred® D-rungs
  • Heavy Duty extruded rung locks are spring loaded to operate smoothly
  • Base and fly separate easily for use as an extension or two single sections
  • Smooth operating pulley design with 3/8in rope
  • Internal guides increase ease of operation
  • Extra heavy duty I-beam rails
  • Rugged spring loaded locks operate smoothly
  • Heavy duty, self-aligning, free-swinging shoe with slip-resistant tread and replaceable steel spur plate
  • Mar-resistant end caps notched for easy separation of sections

Performance Overview

SizeStyleReach HeightLoad Capacity
20 ft -- 48 ftMulti Section20 ft -- 45 ft300 lbs -- 375 lbs



Model No.SizeMax. Open Extended LengthLoad CapacityApprox. Cu. Ft. Per UnitBase WidthFlange Dimension
D520-220 ft17 ft375 lbs8.819-1/8 in outside Shoes1-3/16 in
D524-224 ft21 ft375 lbs10.419-1/8 in outside Shoes1-3/16 in
D528-228 ft25 ft375 lbs12.119-1/8 in outside Shoes1-1/4 in
D532-232 ft29 ft375 lbs13.819-1/8 in outside Shoes1-1/4 in
D536-236 ft32 ft300 lbs15.419-1/8 in outside Shoes1-1/4 in
D540-240 ft35 ft300 lbs1719-1/8 in outside Shoes1-1/4 in
D544-244 ft39 ft300 lbs21.420-1/8 in1-1/4 in
D548-248 ft43 ft300 lbs23.320-1/8 in1-1/4 in

Type IAA duty rating is for extension ladders up to 32 ft