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3536 Extension Ladders - Keller US
3536 Extension Ladders - Keller US


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3536 36ft Type II Aluminum D-Rung Extension Ladder


SizeStyleMax. Safe Working HeightLoad Capacity
36ftMulti Section32ft225lb Load Capacity Commercial Use

The 3536 Aluminum 36ft Extension Ladder has a duty rating of 225 pounds and interlocking side rails. The D rungs are slip resistant and the side rails are interlocking. Heavy duty spring-loaded locks operate smoothly. Durable shoes rest flat or are heldin spur position with swiveling shoes feature. Mar-resistant end caps help protect the surface ladder is leaning against. Exclusive 3-piece rung-to-rail connection means twist-proof performance every time.


  • Exclusive 3-piece rung-to-rail connection means twist-proof performance
  • 1-3/4in slip-resistant D-rungs
  • Durable extruded rung locks are spring loaded to operate smoothly
  • Mar-resistant end caps
  • Smooth operating pulley with polypropylene rope
  • Heavy duty modified I-beam side rails
  • Durable shoe rests flat on slip resistant pad or is heldin spur position with swiveling shoes feature


FeatureSize / Details
Max. Safe Working Height32ft
Max. Open Extended Length32ft
StyleMulti Section
Load Capacity225lb Load Capacity Commercial Use
Duty RatingType II Duty Rating
Approx. Closed Length216in
Approx. Product Weight (lb)74.4
Approx. Shipping Weight (lb)74.4
Base Width17-3/4in
Max. Load225lb
Section x Rungs2 x 18
Rung Dimension15-1/4in x 1-1/2in

Package Contents

Part NumberQtyDescription



Additional 3500 Series Models

Model No.SizeMax. Safe Working HeightMax. Open Extended LengthStyleApprox. Closed LengthApprox. Product Weight (lb)
352020ft17ft17ftMulti Section120in26.2
352424ft21ft21ftMulti Section144in32.7
352828ft25ft25ftMulti Section168in42
353232ft29ft29ftMulti Section192in53.3
353636ft32ft32ftMulti Section216in74.4
354040ft35ft35ftMulti Section240in82.4

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.