Dock Storage

Dock Storage Boxes. Legendary Quality. Uncompromising Design.

The Leading Name in Fiberglass Dock Boxes for 30 Years

It’s been 30 years since we introduced the first all-fiberglass, marine-grade dock boxes to the marina community. Today, Dock Boxes Unlimited delivers the most complete line of fiberglass dock boxes anywhere, backed by the most responsive customer service in the industry—before, during, and after your purchase.


Largest Inventories & Fastest Lead Times

Now shipping from 4 locations! Customer pickups are also welcomed!

Sarasota, Florida | Valdosta, Georgia | New Paris, Indiana | Lebanon, Missouri


Marine environments are unforgiving. That’s why we’re so steadfast in our commitment to quality. Built with an average thickness of 3/16”, our heavy-duty white fiberglass dock boxes offer reinforced lids for seating, stainless steel lockable latches, along with 316 stainless steel lid lifts for easy lid opening and closing. A dock box from Dock Boxes Unlimited is built to outlast the elements, so your investment exceeds your expectations.


Docks don’t come in one size and shape. So why should your dock storage? Our fiberglass dock boxes come in an array of shapes, sizes, and configurations. From the tried and true Standard Series to the “over the water” Triangular Series that maximizes dock space, there’s a fiberglass dock box for any application.

Not sure which dock box configurations are right for your project? Contact a Dock Boxes Unlimited specialist to design a dock storage plan that fits both your needs and your budget.


Nothing affects the look of your docks and marina more than the dock boxes you select. The more uniform your dock boxes are, the better your marina looks. That’s why standardizing your marina with dock boxes from our fiberglass dock box collection is so important. You need a partner that can deliver a storage solution that will add to your property’s value, not detract. You need Dock Boxes Unlimited.

Dock Storage FAQs

  • What are dock boxes made of?

    Our dock storage boxes are made with fiberglass and resin material. Stainless steel hardware is used to attach all components. Fiberglass and stainless steel are proven to withstand extreme weather conditions in both freshwater and saltwater environments.

  • What sizes of dock boxes do you offer?

    Dock Boxes Unlimited offers 20 different shapes and sizes of dock boxes to meet most of your storage needs. When you choose our matching fiberglass dock boxes, you maximize the overall style and appearance of your dock area.

  • Are dock storage boxes weatherproof?

    Our dock boxes are made of fiberglass and are finished with a UV Gel coat similar to materials that are used to make a boat so, they withstand extreme temperature changes with a very low tolerance for expansion and contraction of the material.

  • What is the availability of your dock boxes?

    Dock Boxes Unlimited ships from 4 different locations, and each location carries large inventories. This ensures quick and convenient access to all of our dock box designs. What’s more, we ship to both commercial and residential addresses across the United States.

  • Why choose Dock Boxes Unlimited?

    Dock Boxes Unlimited Inc. has been in the business for over 30 years and has become the leading source of quality fiberglass storage boxes. We are genuinely interested in providing you with the best experience in your storage needs before, during, and after your purchase.

Let Us Design A Dockside Storage Plan That Fits.

Contact a Dock Boxes specialist to get started on your complimentary storage plan today!

Unmatched Quality. Proven Durability.

Dock Equipment for Every Boat Dock

Whether it’s finding the perfect dock supply product or equipping an entire marina facility, Dock Boxes Unlimited has the solutions you need.