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Products > Climbing-Equipment > Extension Ladders > 9500-1 Series > 9520-1 20 ft Type IA All Fiberglass Round Rung Extension Ladder > 9520-1

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9520-1 20 ft Type IA All Fiberglass Round Rung Extension Ladder

Performance Overview

SizeStyleApprox. Closed LengthReach HeightLoad CapacityPerformance Rating
20 ftSpecialty20 ft22 ft300 lbs

The 9520-1 All-Fiberglass 20 ft Straight Ladder is ideal in highly-corrosive environments. Where most fiberglass extension ladders have aluminum rungs, the 9500-1 series has unique box-beam rails that are connected with a fiberglass pultruded rung. Nylon plugs interlock the entire rung-to-rail connections. Thick rubber treads and spur plates provide a solid foundation at the foot. These ladders bear a duty rating of 300 pounds.


  • All Fiberglass rungs and rails ideal for harsh environments
  • Unique box-beam rails are connected with a fiberglass rung
  • Rail and rung are connected with reinforced nylon plugs that interlock the entire system
  • Thick rubber treads and convenient spur plates provide a solid foundation
  • Spring-assisted mechanism has polymer flippers for longer life and a quiet sliding action over the rungs
  • Two heavy duty guide brackets are secured to the top of the base section
  • Protective molded endcaps mounted at the top of the ladder


FeatureSize / Details
Size20 ft
Max. Safe Working Height20 ft
Max. Open Extended Length20 ft
Load Capacity300 lbs
Rung TypeRound
Foot MaterialSlip-resistant pad
Number of Sections1
Base Width19 in outside shoes
CertificationsANSI A14.5 (2007); OSHA
Approx. Closed Length20 ft
Reach Height22 ft
Approx. Shipping Weight Lbs.42
Approx. Cu. Ft. Per Unit12.5
Performance Rating

Package Contents

Part NumberQtyDescription


Rails Dimension3-1/4 in
Flange Dimension1-3/16 in
Rung Dimension1-1/4 in
Fly Width15-1/2 in

Additional 9500-1 Series Models

Model No.SizeMax. Safe Working HeightMax. Open Extended LengthApprox. Closed LengthReach HeightApprox. Shipping Weight Lbs.Buy Online
9508-18 ft8 ft8 ft8 ft11 ft18
9510-110 ft10 ft10 ft10 ft13 ft22
9512-112 ft12 ft12 ft12 ft15 ft26
9514-114 ft14 ft14 ft14 ft17 ft30
9516-116 ft16 ft16 ft16 ft18 ft34
9518-118 ft18 ft18 ft18 ft20 ft38
9520-120 ft20 ft20 ft20 ft22 ft42

What is the totally retracted length of a 9518-1 extension ladder?

I want to carry one on top of a truck tool box that is 9 ft 6 inches long.
Asked by: Hotstick
The 9518-1 is a single section straight ladder. The ladder is 18 feet long, and does not close.
Answered by: Werner Customer Care
Date published: 2013-10-22
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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.