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Products > Climbing-Equipment > Extension Ladders > D500-2 Series > D540-2 40 ft Type IA Aluminum D-Rung Extension Ladder > D540-2

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D540-2 Extension Ladders |  - Werner Asia


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D540-2 40 ft Type IA Aluminum D-Rung Extension Ladder

Performance Overview

SizeStyleReach HeightLoad Capacity
40 ftMulti Section37 ft300 lbs

The D540-2 40 ft aluminum extension ladders have a duty rating of 300 pounds 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 375 pounds for 20 ft-32 ft models.


  • Exclusive ALFLO® rung joint means TWIST-PROOF® performance
  • 1-3/4 in 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 double pulley design with 3/8 in 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


FeatureSize / Details
Size40 ft
Load Capacity300 lbs
TypeType IA Duty Rating
StyleMulti Section
Max. Open Extended Length35 ft
Number of Sections2
Foot DesignHeavy duty shoe with slip-resistant tread and spur plate
Foot MaterialSlip-resistant pad
Approx. Cu. Ft. Per Unit17
Rails Dimension3-1/4 in
Fly Width16-15/16 in
Flange Dimension1-1/4 in
CertificationsANSI A14.2 (2007); OSHA
Reach Height37 ft
Rung Dimension1-3/4 in
Rung TypeD-Rung

Package Contents

Part NumberQtyDescription



Additional D500-2 Series Models

Model No.SizeLoad CapacityTypeMax. Open Extended LengthApprox. Cu. Ft. Per UnitFly Width
D520-220 ft375 lbsType IAA Duty Rating17 ft8.816-7/8 in
D524-224 ft375 lbsType IAA Duty Rating21 ft10.416-7/8 in
D528-228 ft375 lbsType IAA Duty Rating25 ft12.116-15/16 in
D532-232 ft375 lbsType IAA Duty Rating29 ft13.816-15/16 in
D536-236 ft300 lbsType IA Duty Rating32 ft15.416-15/16 in
D540-240 ft300 lbsType IA Duty Rating35 ft1716-15/16 in
D544-244 ft300 lbsType IA Duty Rating39 ft21.420-5/32 in
D548-248 ft300 lbsType IA Duty Rating43 ft23.320-5/32 in