Products > Climbing-Equipment > Extension Ladders > 5200K Series > 5240K 40ft Type IA Fiberglass D-Rung Extension Ladder > 5240K

5240K Extension Ladders - Keller US
5240K Extension Ladders - Keller US


  •  View 5200K Series Page
  •  Replacement Parts
  • Share
  •  Email page | Print this page


Complementary Products

You May Also Consider

5240K 40ft Type IA Fiberglass D-Rung Extension Ladder


SizeStyleMax. Safe Working HeightReach HeightLoad Capacity
40ftMulti Section35ft37ft300lb

The 5240K extension ladder boasts a duty rating of 300 pounds and features the exclusive 3-piece rung-to-rail connection that guarantees twist-proof peformance. External guides at top of base section help secure the interlocking siderails. Pre-pierced holes at the top of the fly section allow for easy field installation of accessories. The plate and rung assembly are riveted at four points to each side rail. The D rung steps are slip resistant and the durable rail shield and shoe bracket protects the rail from damage.


  • Exclusive 3-piece rung-to-rail connection means twist-proof performance
  • 1-1/4in slip-resistant D-rung steps
  • Plate and rung assembly are riveted at four points to each side rail to allow for rung replacement
  • Smooth operating pulley with polypropylene rope
  • Interlocking side rails with nylon coated internal rail guides on bottom of fly section increase ease of operation
  • External guides at top of base section securely interlock rails
  • Base and fly separate easily to use base section as single ladder
  • Rugged, heavy duty extruded rung locks are spring loaded to operate smoothly
  • Pre-pierced holes for easy field installation of accessories
  • Durable rail shield and shoe bracket protects rail from damage
  • Dual action feet with slip-resistant pad and spur plate for use on hard or penetrable surfaces


FeatureSize / Details
Max. Safe Working Height35ft
Max. Open Extended Length35ft
StyleMulti Section
Load Capacity300lb
Duty RatingType IA Duty Rating
Approx. Closed Length240in
Approx. Cu. Ft. Per Unit26.7
Approx. Product Weight (lb)126.5
Approx. Shipping Weight (lb)126.5
Base Width22in
CertificationsANSI A14.5 (2007); OSHA
Flange Dimension1-3/4in
Fly Width16-3/4in
Foot DesignHeavy duty shoe with slip-resistant tread and spur plate
Foot MaterialSlip-resistant pad
Max. Load300lb
Number of Sections2
Approx. Product Width22in
Reach Height37ft
Section x Rungs2 x 20
Rails Dimension4in
Rung Dimension17-3/8in x 1-5/8in
Rung TypeD-Rung

Package Contents

Part NumberQtyDescription



Additional 5200K Series Models

Model No.SizeMax. Safe Working HeightMax. Open Extended LengthLoad CapacityDuty RatingApprox. Closed Length
5216K16ft13ft13ft350lbType IAA Duty Rating96in
5220K20ft17ft17ft350lbType IAA Duty Rating120in
5224K24ft21ft21ft350lbType IAA Duty Rating144in
5228K28ft25ft25ft350lbType IAA Duty Rating168in
5232K32ft29ft29ft350lbType IAA Duty Rating192in
5236K36ft32ft32ft300lbType IA Duty Rating216in
5240K40ft35ft35ft300lbType IA Duty Rating240in

Different types of ladders are designed to keep you safe and productive when climbing or standing. Using the wrong style of ladder or simply ignoring the limitations of climbing equipment can result in a fall or serious injury.
Height reach Height is referring to the actual ladder height. Extension ladders should be 7 to 10 feet longer than the highest support or contact point, which may be the wall or roof line. The highest standing level is four rungs down from the top. The highest permitted standing level on a stepladder is two steps down from the top.

Reach height is the maximum reach assuming a 5’6” person with a vertical 12” reach.
Ladders are designed to safely hold up to a specific amount of weight. The Werner Performance System defines five different capacities using a color and star rating system. The Duty Rating is defined as the maximum safe load capacity of the ladder. A person’s fully clothed weight plus the weight of any tools and materials that are carried onto the ladder must be less than the load capacity.

Performance system
Werner offers ladder made from fiberglass and aluminum. Each material has characteristics which make it best for certain applications, or one material may simply fit the personal preferences of the user. For example, if working around electricity users should select fiberglass products due to their non-conductive side rails.