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Internet # 203527614

Model # 154459

Store SKU # 447066

3/4 in. x 4 ft. x 8 ft. AB Marine Grade Pressure-Treated Fir Plywood

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  • Approved for saltwater applications
  • Lifetime limited warranty against rot and termites
  • Ideal for docks, ponds, boardwalks and more
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Product Details

About This Product

This 3/4 in. AB marine-grade pressure-treated fir plywood panel is engineered for demanding outdoor and wet-area applications. The AB grade offers a smooth, paintable face with minimal defects and a solid back, while the marine-grade construction ensures superior strength and resistance to delamination. Pressure treatment adds protection against rot, decay, and insect damage, making it ideal for boat building, docks, piers, and other high-moisture environments. With a full 4 ft. x 8 ft. coverage, this panel delivers long-lasting performance in harsh conditions.

Highlights

  • For large quantity orders of 90 units or more, visit the Pro Desk at your local store, or call our Quote Center at 1-800-430-3376
  • Marine plywood
  • Compatible with aluminum components
  • Compatible with carbon steel (black iron) fasteners
  • Each piece of this lumber meets the highest quality grading standards for strength and appearance
  • Return Policy
  • California residents
     see Prop 65 WARNINGS

Product Information

Internet # 203527614

Model # 154459

Store SKU # 447066

Specifications

Dimensions

Actual Product Length (in.)

96.000 in

Actual Product Thickness (in.)

0.75 in

Actual Product Width (in.)

48 in

Nominal Product Length (ft.)

8

Nominal Product Thickness (in.)

3/4

Nominal Product Width (ft.)

4

Details

Exposure Durability

Exterior

Plywood Features

Pressure Treated

Plywood Product Type

Sheathing

Warranty / Certifications

Manufacturer Warranty

Lifetime Limited

Questions & Answers

can it be used as bathroom sub floor
ByOct 23, 2025
1 Answer | 
Answer This Question

Hello Robbie, yes, this product is able to be used as sub-flooring.

By|Oct 23, 2025
    0/0


    Can you use this next to aluminum
    ByJul 23, 2025
    2 Answers | 
    Answer This Question

    Court, This is treated with MCA (micronized Copper Azole). However, Aluminum contact is not recommended with Pressure-Treated products when immersed in water or are subject to frequent and prolonged wetting or other severe exposure conditions.

    By|Jul 23, 2025
      0/0

      Court, This is treated with MCA (micronized Copper Azole). However, Aluminum contact is not recommended with Pressure-Treated products when immersed in water or are subject to frequent and prolonged wetting or other severe exposure conditions.

      By|Jul 23, 2025
        0/0


        What is the weight strength of this board for subflooring in a small rv trailer bathroom?
        ByJun 12, 2025
        1 Answer | 
        Answer This Question

        Hi Taylor, we are unable to give a standard "strength value" as that will depend on the type of application, type and spacing of supports, and the manner of use.

        By|Jun 13, 2025
          0/0


          Could this be used to make shutters?
          ByMar 28, 2025
          1 Answer | 
          Answer This Question

          Clint, it would be possible to use these to make shutters from this. Please check with local building code officials to ensure this product meets any code requirements.

          By|Mar 28, 2025
            0/0


            can you paint marine grade plywood ? If so is there a special primer ?
            ByMar 28, 2025
            2 Answers | 
            Answer This Question

            Yes, but use only latex (water based) paint and primer. Mike

            By|Apr 1, 2025
            0/0

            Jimmy, We do not recommend painting pressure treated lumber. While it is possible to paint, the end result is often not up to a customer's expectation. If your project calls for paint, ensure that product is dry and ready to accept the paint. Multiple coats of paint may be needed. The paint department can help to pick the best paint for your project.

            By|Apr 1, 2025
              0/0


              Is this product compatible with hot-dipped galvanized steel framing?
              ByJan 15, 2025
              1 Answer | 
              Answer This Question

              Normal hot dipped galvanized steel can be used in most cases. This pressure-treated plywood is also compatible with aluminum components and carbon steel (black iron) fasteners.

              By|Jan 16, 2025
                0/0


                Trailer Decking
                ByOct 13, 2024
                0 Answer | 
                Answer This Question

                Can you use it indoors
                ByOct 1, 2024
                1 Answer | 
                Answer This Question

                Use of it indoors and how it will be used is at your own discretion. This product is AB marine-grade, pressure-treated plywood offers superior protection against fungal decay in wet environments. It is approved for saltwater applications and offers excellent corrosion resistance. It is also safe for human and aquatic environments. This pressure-treated plywood is a great choice for water applications, such as docks, ponds, boardwalks and more.

                By|Oct 2, 2024
                  0/0


                  Viewing 1-8 of 97

                  Customer Reviews

                  3.9 out of 5

                  • 3.9 out of 56 reviews
                  • 42% recommend this product
                  Filter by:
                  Showing 1-10 of 56 reviews
                  I rebuilt a new Florida room wall. This was the best option and quickest way to do this job done ...
                  I rebuilt a new Florida room wall. This was the best option and quickest way to do this job done in the same day to receive the new impact windows. We are very happy.
                  by
                  • Verified Purchase
                  • Recommended
                  2 found this review helpful
                  Nicest plywood I have ever purchased.
                  by
                  Response from UFPI Customer ServiceSep 18, 2025
                  Dear Matt, thank you for your wonderful review! If there’s anything else that we can help you with, please e-mail our customer service department at UFPRetailCS@UFPI.com, and one of our representatives will be happy to assist you.
                  • Verified Purchase
                  Good quality sheets. Strong for roofing, while easy to maneuver
                  by
                  Response from UFPI RepresentativeJun 26, 2025
                  Dear Sean, We appreciate you taking the time to let us know about your experience! We are very glad to hear that you are satisfied with our product. If there’s anything else that we can help you with, please e-mail our customer service department at UFPRetailCS@UFPI.com, and one of our representatives will be happy to assist you.
                  • Verified Purchase
                  This customer chose to rate the product and not provide text.
                  by
                  • Verified Purchase
                  Lowest quality marine grade I have ever used. Lots of filler covering surface voids. One piece had been taped with filler applied to "rebuild" a broken edge. It met bare minimum requirements for the project it was purchased for. I was less than satisfied.
                  by
                  Response from UFPI Customer ServiceMay 1, 2025
                  Dear Dan, thank you for letting UFP Retail Solutions know about your frustrating experience with the selection of lumber that your local store has in stock. We do value you as a customer and can assure you that our lumber is normally of excellent quality. If you are still in need of lumber, please see a Pro Associate at your local store for product availability or the possibility of completing a special order for what you need. If there is anything that we, as the manufacturer, can do regarding the lumber itself, please contact us at UFPRetailCS@UFPI.com, and one of our customer service representatives will be happy to assist you.
                  • Verified Purchase
                  1 found this review helpful
                  This customer chose to rate the product and not provide text.
                  by
                  • Verified Purchase
                  I needed the board to repair my transom on my boat, it worked out well used, fiberglass over it. Thank you ??
                  by
                  Response from UFPI Customer ServiceNov 28, 2024
                  Dear Valued Customer, thank you for sharing your experience! If there’s anything else that we can help you with, please e-mail our customer service department at UFPRetailCS@UFPI.com, and one of our representatives will be happy to assist you.
                  • Verified Purchase
                  This customer chose to rate the product and not provide text.
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                  • Verified Purchase
                  This customer chose to rate the product and not provide text.
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                  • Verified Purchase
                  This customer chose to rate the product and not provide text.
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                  • Verified Purchase
                  Showing 1-10 of 56 reviews