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Products > Climbing-Equipment > Extension Ladders > D500-2 Series > D528-2 28 ft Type IAA Aluminum D-Rung Extension Ladder > D528-2

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D528-2 Extension Ladders |  - Werner Asia


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D528-2 28 ft Type IAA Aluminum D-Rung Extension Ladder

Performance Overview

SizeStyleReach HeightLoad Capacity
28 ftMulti Section27 ft375 lbs

The D528-2 28 ft aluminum extension ladders have a duty rating of 375 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 300 pounds for 36 ft-48 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 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
Size28 ft
Max. Open Extended Length25 ft
StyleMulti Section
Load Capacity375 lbs
Approx. Cu. Ft. Per Unit12.1
Base Width19-1/8 in outside Shoes
CertificationsANSI A14.2 (2007); OSHA
Flange Dimension1-1/4 in
Fly Width16-15/16 in
Foot DesignHeavy duty shoe with slip-resistant tread and spur plate
Foot MaterialSlip-resistant pad
Number of Sections2
Reach Height27 ft
Rails Dimension3-1/4 in
Rung Dimension1-3/4 in
Rung TypeD-Rung
TypeType IAA Duty Rating

Package Contents

Part NumberQtyDescription



Additional D500-2 Series Models

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