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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 40 ft Type IA Aluminum D-Rung Extension Ladder

Performance Overview

SizeStyleApprox. Closed LengthReach HeightLoad CapacityPerformance Rating
40 ftMulti Section20 ft37 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
Max. Safe Working Height35 ft
Max. Open Extended Length35 ft
StyleMulti Section
Load Capacity300 lbs
Rung TypeD-Rung
Foot MaterialSlip-resistant pad
Number of Sections2
Base Width19-1/8 in outside Shoes
CertificationsANSI A14.2 (2007); OSHA
Approx. Closed Length20 ft
Reach Height37 ft
Approx. Shipping Weight Lbs.99.5
Approx. Cu. Ft. Per Unit17
Performance Rating

Package Contents

Part NumberQtyDescription


Rails Dimension3-1/4 in
Flange Dimension1-1/4 in
Rung Dimension1-3/4 in
Fly Width16-15/16 in

Additional D500-2 Series Models

Model No.SizeMax. Safe Working HeightMax. Open Extended LengthLoad CapacityBase WidthApprox. Closed LengthBuy Online
D520-220 ft17 ft17 ft375 lbs19-1/8 in outside Shoes10 ft
D524-224 ft21 ft21 ft375 lbs19-1/8 in outside Shoes12 ft
D528-228 ft25 ft25 ft375 lbs19-1/8 in outside Shoes14 ft
D532-232 ft29 ft29 ft375 lbs19-1/8 in outside Shoes16 ft
D536-236 ft32 ft32 ft300 lbs19-1/8 in outside Shoes18 ft
D540-240 ft35 ft35 ft300 lbs19-1/8 in outside Shoes20 ft
D544-244 ft39 ft39 ft300 lbs20-1/8 in22 ft
D548-248 ft43 ft43 ft300 lbs20-1/8 in24 ft

Rating at 300# What can a man weight to still be with in your guild lines?

Asked by: Paul R. Martin
The maximum weight this ladder can hold is 300lbs. That will include the person using it, and any tools they may have with them
Answered by: Werner Customer Care
Date published: 2016-04-15

how many people does it take to handle a 40FT 300 lb rated ladder?

Asked by: token
When using a 40 foot extension ladder, it is recommended to have two people. The D540-2 weighs 99.5 pounds. The weight of the ladder would be difficult for one person to carry and extend into position.
Answered by: Werner Customer Care
Date published: 2015-09-27

Please list which Werner brand stabilizers will fit the following Werner ladders:D1540-2,D540-2,D6240-2 and D544-2?

I plan to buy one of the listed ladders, but need to know which of the 3 stabilizers will work on each ladder. If none, can you offer any suggestions?
Asked by: John
The AC78 will fit all the models you have listed.
Answered by: Werner Customer Care
Date published: 2015-08-10

What is "MT" Series?

In a previous question a customer asked what the country of manufacture is? Werner answer "MT" ladders are made in Mexico. How do we know what an "MT" series ladder is? The Model is series D500. Where are the D500 Type 1AA ladders made?
Asked by: S
The MT is made in China. You can go to the following website to view the MT series ladders. http://www.wernerco.com/us/en/results?s=mt The D500 series ladders are made in Juarez, Mexico.
Answered by: Werner Customer Care
Date published: 2016-06-24

What is the country of origin?

Asked by: Frank
The MT Series of ladders are manufactured in Mexico. In recent years Werner Co. has expanded globally to become the world leader in the manufacturing and distribution of ladders, climbing equipment and ladder accessories. Werner is now available in new markets and product categories and has added manufacturing and distribution facilities in the U.S. and around the world to satisfy global demand.
Answered by: Werner Customer Care
Date published: 2016-06-23

I want a ladder in jalore district .

Asked by: Vijay Kumar yadav
Please contact Customer Care at 888-523-3371 Monday through Friday from 8:00 AM to 5:00 PM EST.
Answered by: Werner Customer Care
Date published: 2017-08-04

product weight

i am trying to get the product weight of a 32 foot type IAA extra heavy duty industrial ladder with a rating of 375 pounds, this would include the levelers for the feet and the hooks for strand.
Asked by: Steve
The D532-2 weighs 74 lbs. If you add the PK80-2 Levelers, they weigh 9.5 lbs. The cable hooks will not work for model number D532-2.
Answered by: Werner Customer Care
Date published: 2017-06-06


Asked by: jack
Pricing and product are solely provided by distributors in your area. Please visit our website at www.wernerladder.com and utilize our distributor locator to identify the nearest distributors in your area.
Answered by: Werner Customer Care
Date published: 2016-10-04

How much does a 24ft. alumium ladder weigh?

Asked by: Blackie
74 lbs.
Answered by: Werner Customer Care
Date published: 2017-02-24

The collapsed length of my fiberglas extension ladder is approx. 12'-6". What length would this ladder be considered?

Asked by: Anonymous
The length of a ladder is measured by the total length of the rails, both sections. If both sections of the ladder are 12 feet long, this would be a 24 foot ladder.
Answered by: Werner Customer Care
Date published: 2015-09-27
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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 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.

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.