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Internet # 203134226

Model # D1520-1

Store SO SKU #785448

20 ft. Aluminum D-Rung Straight Ladder with 300 lb. Load Capacity Type IA Duty Rating

$329.00
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  • 300 lb. load capacity straight ladder for PRO or DIY projects
  • Twist-proof climb by exclusive Werner ALFLO rung joint for safety
  • Slip-resistant 1-1/4 in. TRACTION-TRED D-rung steps for safety
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Product Details

About This Product

The D1520-1 is a 20 ft. one-section Aluminum Straight Ladder with a duty rating of 300 lbs. The exclusive ALFLO rung joint means TWIST-PROOF performance every time. The side rails are extra heavy duty I-beam rails and the aluminum TRACTION-TRED D-rungs are slip resistant. The rugged shoe rests flat or is held in spur position with the SHU-LOK feature for use on hard or penetrable surfaced.

Highlights

  • ALFLO twist proof performance
  • Comfortable D-rungs
  • 300 lbs. load capacity
  • Lightweight aluminum
  • Cannot ship to home, available for store delivery only
  • Return Policy

Product Information

Internet # 203134226

Model # D1520-1

Store SO SKU #785448

Specifications

Dimensions

Industry Standard Ladder Height (ft.)

20

Reach Height (ft.)

22

Rung/Step Depth (in.)

1.25 in

Details

Features

Weather Resistant

Ladder Product Type

Straight

Ladder Rating

Type 1A - 300 lbs.

Ladder Type

Straight Ladder

Load Capacity (lb.)

300 lb.

Material

Aluminum

Number of Steps

20

Product Weight (lb.)

43.5 lb

Returnable

90-Day

Rung/Step Material

Aluminum

Warranty / Certifications

Certifications and Listings

ANSI Certified, OSHA Compliant

Manufacturer Warranty

na

Questions & Answers

How wide is this ladder (12" to 14"?)
ByJun 26, 2026
2 Answers | 
Answer This Question

The approx. width of the D1510-1 is 18.125 inches.

By|Jun 29, 2026

    The approx. width of the D1510-1 is 18.125 inches.

    By|Jun 29, 2026


      What ie the width of the ladder side rails
      ByJun 22, 2026
      2 Answers | 
      Answer This Question

      D1512-1 rails are 3"

      By|Jun 23, 2026

        D1512-1 rails are 3"

        By|Jun 26, 2026


          How much does ladder weigh
          ByJun 15, 2026
          2 Answers | 
          Answer This Question

          Weight is 21.5 lb.s

          By|Jun 16, 2026

            weight is 21.5 lb

            By|Jun 16, 2026


              Will the Levelok open rung standoffs work on this ladder?
              ByJun 13, 2026
              2 Answers | 
              Answer This Question

              D1510-1 recommended stabilizer is AC96 or 97P.

              By|Jun 15, 2026

                Model # D1510-1, recommended stabilizer is part number 97P or AC96.

                By|Jun 15, 2026


                  Does this model come with a rope for pulling it back after use? We are replacing a 20-year-old Werner ladder and want that same feature again.
                  ByMar 29, 2026
                  2 Answers | 
                  Answer This Question

                  The D1516-1 does not come with a rope.

                  By|Aug 22, 2026

                    (1)

                    The D1516-1 does not come with a rope.

                    By|Mar 30, 2026


                      How wide are the rails?
                      ByDec 6, 2025
                      2 Answers | 
                      Answer This Question

                      Model # D1518-1: Flange Dimension (in) 1.125in Rails Dimension 3in

                      By|Dec 8, 2025

                        Model # D1518-1: Flange Dimension (in) 1.125in Rails Dimension 3in

                        By|Dec 8, 2025


                          can you add hand rails to the ladder for more safety
                          ByJan 1, 2025
                          2 Answers | 
                          Answer This Question

                          Model # D1510-1, you may be interested in the X300000 walk thru. Please go to the following link, to see the walk thru. It is recommended for your model D1510-1 ladder. https://www.wernerco.com/us/products/ladders/ladder-accessories/WalkThruSeries/X300000

                          By|Jun 16, 2025

                            (1)

                            Model # D1510-1, you may be interested in the X300000 walk thru. Please go to the following link, to see the walk thru. It is recommended for your model D1510-1 ladder. https://www.wernerco.com/us/products/ladders/ladder-accessories/WalkThruSeries/X300000

                            By|Jan 4, 2025


                              How much does the Werner D1516-1 16 foot straight ladder weigh?
                              ByJan 30, 2024
                              2 Answers | 
                              Answer This Question

                              Model D1516-1 approximate product weight 32.5 lbs.

                              By|Oct 29, 2025

                                (1)

                                Model D1516-1 approximate product weight 32.5 lbs.

                                By|Jan 30, 2024


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                                  Customer Reviews

                                  4.5 out of 5

                                  • 4.5 out of 185 reviews
                                  • 89% recommend this product
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                                  Showing 1-10 of 185 reviews
                                  Great solid straight ladder I needed it for access to our chimney with hooks added worked out perfectly
                                  by
                                  • Verified Purchase
                                  I bought this Werner 14 ft. Aluminum straight ladder. I like that it is a very sturdy ladder, but is definitely light enough to handle fairly easily, especially considering it is a 14 ft. ladder. I’ve had it now for several months and use it quite often in a commercial space to access the attic area. It is the perfect ladder for what I needed.
                                  by
                                  The order took 2 months to get but it works as expected. It is light weight so the operator can easily remove the ladder from the machine for cleaning.
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                                  I have returned 2 of the same ladders for manufacturing defaults.
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                                  Showing 1-10 of 185 reviews

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                                  Product Snapshot

                                  Great for homeowners needing a 20 ft. reach, Type IA 300 lb. duty rating, slip-resistant aluminum ladder.
                                  Ideal for professionals or homeowners needing a durable, twist-proof 18 ft. aluminum ladder with a 300 lb. load capacity.
                                  Ideal for professionals or homeowners needing a durable, non-conductive 20 ft. fiberglass ladder with a 300 lb. load capacity.
                                  Great for homeowners needing a 14 ft. reach, twist-proof, slip-resistant aluminum ladder with a 300 lb. capacity.

                                  Maximum Load Capacity

                                  300 lb.
                                  300 lb.
                                  300 lb.
                                  300 lb.

                                  Height

                                  20 ft.
                                  18 ft.
                                  20 ft.
                                  14 ft.

                                  Material

                                  Aluminum
                                  Aluminum
                                  Fiberglass
                                  Aluminum

                                  Slip-Resistant Rungs

                                  Stabilizing Feet