Best Large Dock Boxes 18 cu ft and Up Ranked

11 full-length and deep dock boxes of 18 cu ft and more.

Last updated: November 9, 2026

A large dock box takes cushions, skis, tubes, rods and a cooler as well as the safety gear, which suits a family boat or a fishing boat kept at the same slip all season. Fiberglass boxes of this size cost $800 to $1,450; polyethylene ones cost $315 to $500 and give up some stiffness and fade resistance.

Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.

Full ranking 11

  1. Lifetime Marine Dock Box 130 gal
    #1 of 114.2Full review

    The value pick: a plastic dock bench box with a 10-year warranty for a fraction of fiberglass prices.

    Lifetime $314.99
    $314.99
    22.1 cu ftPolyethyleneSpring hinge
  2. Taylor Made Stow 'n Go Top Seat Large
    #2 of 113.8Full review

    The biggest Taylor Made box, with a seat top. The best fit when you want a dock bench and the most fiberglass storage.

    Amazon $1,358.23
    $1,358.23
    35 cu ftFiberglassGas supports
  3. RecPro Dock Box with Seat Top 71"
    #3 of 113.7Full review

    A big fiberglass dock box with a seat top, from an RV and marine parts maker. Roomy, but no published warranty.

    RecPro $1,449.95
    $1,449.95
    35.7 cu ftFiberglassGas supports
  4. Taylor Made Stow 'n Go Deep Medium
    #4 of 113.6Full review

    A 6 ft, extra-deep fiberglass box for cushions, tubes and skis. Good value per cubic foot for fiberglass.

    Amazon $1,174.44
    $1,174.44
    29.2 cu ftFiberglassGas supports
  5. Taylor Made Stow 'n Go Poly Large
    #5 of 113.5Full review

    A large, low-cost polyethylene dock box from the leading fiberglass maker. Strong value if you won’t sit on it.

    Lippert (Taylor Made) $502.95
    $502.95
    28.3 cu ftPolyethylene-
  6. Taylor Made Stow 'n Go Fisherman's XL
    #6 of 113.5Full review

    The Standard XL with rod holders in the lid, for anglers who keep rods at the dock.

    Lippert (Taylor Made) $1,302.95
    $1,302.95
    29 cu ftFiberglassGas supports
  7. Taylor Made Stow 'n Go Standard Large
    #7 of 113.4Full review

    A 7 ft fiberglass box. Check the price of the 95 in Standard XL first, which has sold for less.

    Lippert (Taylor Made) $1,249.95
    $1,249.95
    26 cu ftFiberglassGas supports
  8. Taylor Made Stow 'n Go Standard XL
    #8 of 113.4Full review

    The longest standard Taylor Made box, for boaters with long gear and the dock length to fit it.

    Amazon $1,610
    $1,610
    29 cu ftFiberglassGas supports
  9. Taylor Made Stow 'n Go Standard Medium
    #9 of 113.3Full review

    The common 6 ft fiberglass dock box, long enough for paddles and skis. A good default for a typical slip.

    Amazon $1,128.02
    $1,128.02
    23 cu ftFiberglassGas supports
  10. DoxBox Fiberglass Rectangle 70"
    #10 of 113.3Full review

    A 6 ft fiberglass box with vents and soft-close arms for less than a Taylor Made of the same length.

    Amazon $799
    $799
    19.7 cu ftFiberglassGas supports
  11. Taylor Made Stow 'n Go Deep Small
    #11 of 113.2Full review

    A short, tall and deep fiberglass box for bulky gear on a slip without much length.

    Amazon $918.71
    $918.71
    18.7 cu ftFiberglassGas supports