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Products > Climbing-Equipment > Extension Ladders > D1300-2 Series > D1320-2 20 ft Type I Aluminum D-Rung Extension Ladder

D1320-2 D1320-2 D1320-2 D1320-2 D1320-2



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D1320-2 20 ft Type I Aluminum D-Rung Extension Ladder

Performance Overview

SizeStyleApprox. Closed LengthReach HeightLoad CapacityType
20 ftMulti Section10 ft19 ft250 lbsType I Duty Rating

The D1320-2 Aluminum 20 ft Extension Ladder has a duty rating of 250 pounds and heavy duty modified I-beam side rails. The TRACTION-TRED® D rungs are slip resistant and the side rails are interlocking. Heavy duty spring-loaded locks operate smoothly. Durable shoes rest flat or are held in spur position with SHU-LOK® feature. Mar-resistant end caps help protect the surface ladder is leaning against. Exclusive ALFLO® rung joint means TWIST-PROOF® performance every time.


  • 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
  • Mar-resistant end caps
  • Smooth operating pulley with polypropylenerope
  • Heavy Duty modified I-beam side rails
  • Durable shoe rests flat on slip resistent pad or is held in spur position with SHU-LOK® feature


FeatureSize / Details
Size20 ft
Reach Height19 ft
Max Working Length17 ft
Extended Length17 ft
Approx. Closed Length10 ft
StyleMulti Section
Load Capacity250 lbs
TypeType I Duty Rating
Performance Rating
Rung TypeD-Rung
Foot MaterialSlip-resistant pad
Number of Sections2
Base Width17-3/8 in outside rails
CertificationsANSI A14.2 (2007); OSHA
Approx. Cu. Ft. Per Unit7.2
Approx. Shipping Wt. Lbs.32.5

Package Contents

Part NumberQtyDescription


Rails Dimension3 in
Flange Dimension1-1/16 in
Rung Dimension1-3/4 in
Fly Width15-1/4 in

Additional D1300-2 Series Models

Model No.SizeReach HeightMax Working LengthExtended LengthApprox. Closed LengthApprox. Cu. Ft. Per Unit
D1316-2 16 ft15 ft13 ft13 ft8 ft5.8
D1320-220 ft19 ft17 ft17 ft10 ft7.2
D1324-224 ft23 ft21 ft21 ft12 ft8.6
D1328-228 ft27 ft25 ft25 ft14 ft10
D1332-232 ft31 ft29 ft29 ft16 ft11.5
D1336-236 ft34 ft32 ft21 ft18 ft13
D1340-240 ft37 ft35 ft35 ft20 ft14.4

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 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.
Not equipped with rope and pulley