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UnderCover Armor Flex Tri-Fold Tonneau Cover (17-24 F-350 Super Duty w/ 6-3/4-Foot Bed)

Item SSD16213
UnderCover Armor Flex Tri-Fold Tonneau Cover (17-24 F-350 Super Duty w/ 6-3/4-Foot Bed)
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Ship to: Ashburn - 20149
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    Total cost of service $129.00

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation

      Features & Specs

      • To Learn How to Measure Your Bed Click Here
      • Armor Flex Tri-Fold Tonneau Cover
      • Comes With a Dual-Action Tailgate Seal
      • Built With Expanded Polystyrene
      • Uses Aircraft-Grade Aluminum Panels
      • Protected by a Matte Black Line-X Finish
      • Includes Automatic Latching Panels
      • Quick and Easy Installation
      • Features a 5-Year Warranty Coverage
      • Fits All 2017-2024 Ford Super Duty F-350 Models With a 6.75-Foot Bed


      Excellent Cargo Protection. Are you looking for a tonneau cover that offers easy operation and a high level of protection? If so, then this UnderCover Armor Flex Tri-Fold Tonneau Cover is the perfect one for you. To keep thieves and bad weather from entering your Super Duty’s cargo area, this tonneau cover automatically locks once the cover is closed. The addition of rubber seals and hinges prevent water and debris from getting into the cargo area and possibly damaging your cargo.

      Easy-to-Use Tonneau Cover. The tri-fold design of this UnderCover Armor Flex Tri-Fold Tonneau Cover is engineered to give you easy access to your Super Duty’s truck bed area. Slam latches allow you to access your cargo from either side, while the dual-action tailgate seal lets you easily operate the tailgate whether the last cover panel is placed up or down.

      Durable Tonneau Cover. UnderCover wanted a tonneau cover that would last, which is why this Armor Flex Tri-Fold Tonneau Cover is manufactured using high-quality expanded polystyrene and aircraft-grade aluminum panels. This tonneau cover is so strong and durable, it’s capable of handling up to 400 pounds of rain and snow. Finally, a coating of matte black Line-X finish is applied to keep this tonneau cover protected from scratches, dents, UV rays, and corrosion.

      Quick and Easy Installation. With the help of some hand tools, you can completely mount this UnderCover Armor Flex Tri-Fold Tonneau Cover on your Super Duty in about 30 minutes. No drilling or any other modification is needed for installation.

      Features a 5-Year Warranty Coverage. This UnderCover Armor Flex Tri-Fold Tonneau Cover comes with a 5-year warranty. The full list of terms and conditions can be found on the manufacturer’s official website.

      Application. This UnderCover Armor Flex Tri-Fold Tonneau Cover will fit all 2017-2024 Ford Super Duty F-350 and F350 models with a 6.75-foot bed.

      Technical Note. Not sure of your bed size? Click here for an instructional video explaining how to measure your bed length.


      • 2017 Ford F-350
      • 2018 Ford F-350
      • 2019 Ford F-350
      • 2020 Ford F-350
      • 2021 Ford F-350
      • 2022 Ford F-350
      • 2023 Ford F-350
      • 2024 Ford F-350

      UnderCover AX22021

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Tonneau Cover
      • (1) Driver Side Mounting Rail
      • (1) Passenger Side Mounting Rail
      • (2) Drain Tubes
      • Mounting Hardware

      Customer Reviews (6)

        Brand Image

        Reviews of UnderCover Exterior products have an average rating of 4.8 out of 5

          Questions & Answers

          10 More Questions

          Will It Fit My F-350

          • 6.2L V8 - 17, 18, 19, 20, 21, 22
          • 6.7L V8 Power-Stroke - 17, 18, 19, 20, 21, 22, 23, 24
          • 6.8L V8 - 23, 24
          • 7.3L V8 - 20, 21, 22, 23, 24