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Lippert Solid Step® RV Storage Box #664640

SKU #: 664640

Running out of space? The easy-to-install Solid Step RV storage box from Lippert is the perfect way to maximize cargo room under your trailer steps, so you can haul more of your favorite travel gear and accessories when you’re on the road!

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  • expand-more Quick Facts
    • check Made for RVs equipped with a Solid Step
    • check Installs in space where old steps existed
    • check Box measures 27.27" x 11.31" x 13.75"
    • check Holds up to 100 lbs.
    • check Steel construction with durable powder-coat
    • check Mounting bracket and hardware included
    • check Includes a sealed lock and two keys
    • check Installation requires an 8" I-beam
  • expand-more Specifications
    • check SKU: 664640
    • check Brand: Lippert
    • check Series: Solid Step®
    • check Cargo Trim Kit Included: No
    • check Cargo Mounts Included: No
    • check Product Color: Black
    • check Hardware Finish: Powder-coat
    • check Unit of Measure: EA
    • check Country of Origin: CHN
    • check Quantity In Package: 1
    • check Warranty Term: 1 Year
    • check Universal Part: No Fitment
    • check Reference Vendor/Manufacturer Name: Lippert
    • check UPC: 848150060792
    • check Shipping Dimensions: 33" L x 19" W x 17" H, 57 lbs.
  • expand-more What's Included
    • check Storage Box Assembly
    • check Mounting Hardware
    • check Keys (2)
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Product description

More storage. More adventures.

Tired of running out of space on your RV to store your favorite gear? Maximize your storage with the Solid Step® storage box by Lippert! Weighing in at 25lbs., this heavy-duty storage box makes it easy to fill the void underneath your doorjamb when you’ve upgraded your old stairs with the Solid Step. Shipped pre-assembled, the Solid Step Storage box measures at 27.27" x 11.31" x 13.75" and comes with all necessary hardware for installation. And with a 100 lb. weight capacity, this is a great storage solution that let you haul more tools, gear and travel accessories alike.

For more Solid Step accessories, be sure to check out our Solid Step handrail and Solid Step all-weather floor tray!

Compatible with Solid Step Assemblies

Please note: when your manual, flip-down steps are replaced by the Lippert Solid Step, our storage box can be mounted onto the chassis of the trailer under your Solid Step assembly where your previous steps left a void.

Lippert Solid Step RV Storage Box Features

  • EASY INSTALLATION — Designed to fit in the open space under an RV’s doorjamb after manual, fold-down steps have been replaced with a Solid Step, this Storage Box easily slides into to the void for quick installation
  • DURABILITY — Ruggedly constructed from steel to handle the wear and tear of travel, the box comes with a powder-coated protective layer to help prevent scratches and damage
  • MAXIMIZE STORAGE — With a 100 lb. capacity, the storage box measures at 27.27" x 11.31" x 13.75" and only weighs 25 lbs. — allowing you to add more storage without taking up additional space
  • FULLY EQUIPPED — Kit comes complete with mounting brackets and hardware for installation — plus, two keys for the box’s sealed lock
  • COMPATIBILITY — Please note, this box can only be installed when your manual, flip-down steps are replaced by the Lippert Solid Step
Warning:

Warning Cancer and reproductive harm. www.P65Warnings.ca.gov

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Learn & Explore

  1. RV Storage Ideas to Help You Get Organized

    RV Storage Ideas to Help You Get Organized

    To help you get started decluttering and organizing your rig, we’ve curated a list of RV storage ideas that will add functionality and versatility to your limited space.

    Read more arrow-right-alt
  2. Maximize Your RV Storage Under Your Steps with the Solid Step Storage Box

    Maximize Your RV Storage Under Your Steps with the Solid Step Storage Box

    The Solid Step RV Storage Box #664640 slides right under your RV’s entry steps and transforms the void into a secure compartment for gear, tools, and travel essentials. It’s a clever upgrade for anyone using the Solid Step system who wants to boost storage while keeping the doorway clean and functional.

    Read more arrow-right-alt
  3. Upgrade Your RV Steps with the Solid Stance Step Stabilizer Kit

    Upgrade Your RV Steps with the Solid Stance Step Stabilizer Kit

    Whether you’re setting up camp for the weekend or preparing for a cross-country journey, your RV steps are one of the most frequently used parts of your rig. Over time, they can flex, wobble, or feel unsteady — especially on uneven terrain. The Lippert Solid Stance step stabilizer kit offers a simple, effective way to eliminate that movement and make every step in or out of your RV feel secure and solid.

    Read more arrow-right-alt
  4. Upgrade Your RV Entry: Why The Solid Step Handrail Is A Smart DIY Choice

    Upgrade Your RV Entry: Why The Solid Step Handrail Is A Smart DIY Choice

    The Lippert Solid Step Entry Assist Handrail adds stability and confidence to every trip in or out of your RV. Designed to integrate seamlessly with Lippert’s Solid Step assemblies, this durable, foldable handrail is one of the easiest and most rewarding upgrades you can make on your own.

    Read more arrow-right-alt
  5. The 55+ Best Camper Accessories for 2025

    The 55+ Best Camper Accessories of 2025

    This comprehensive rundown of the best camper accessories for 2025 is your ultimate guide to a hassle-free, cozy and utterly delightful journey. 

    Read more arrow-right-alt

Get the most out of your experience

  1. RV Storage Ideas to Help You Get Organized

    RV Storage Ideas to Help You Get Organized

    To help you get started decluttering and organizing your rig, we’ve curated a list of RV storage ideas that will add functionality and versatility to your limited space.

    Read more arrow-right-alt
  2. Maximize Your RV Storage Under Your Steps with the Solid Step Storage Box

    Maximize Your RV Storage Under Your Steps with the Solid Step Storage Box

    The Solid Step RV Storage Box #664640 slides right under your RV’s entry steps and transforms the void into a secure compartment for gear, tools, and travel essentials. It’s a clever upgrade for anyone using the Solid Step system who wants to boost storage while keeping the doorway clean and functional.

    Read more arrow-right-alt
  3. Upgrade Your RV Steps with the Solid Stance Step Stabilizer Kit

    Upgrade Your RV Steps with the Solid Stance Step Stabilizer Kit

    Whether you’re setting up camp for the weekend or preparing for a cross-country journey, your RV steps are one of the most frequently used parts of your rig. Over time, they can flex, wobble, or feel unsteady — especially on uneven terrain. The Lippert Solid Stance step stabilizer kit offers a simple, effective way to eliminate that movement and make every step in or out of your RV feel secure and solid.

    Read more arrow-right-alt
  4. Upgrade Your RV Entry: Why The Solid Step Handrail Is A Smart DIY Choice

    Upgrade Your RV Entry: Why The Solid Step Handrail Is A Smart DIY Choice

    The Lippert Solid Step Entry Assist Handrail adds stability and confidence to every trip in or out of your RV. Designed to integrate seamlessly with Lippert’s Solid Step assemblies, this durable, foldable handrail is one of the easiest and most rewarding upgrades you can make on your own.

    Read more arrow-right-alt
  5. The 55+ Best Camper Accessories for 2025

    The 55+ Best Camper Accessories of 2025

    This comprehensive rundown of the best camper accessories for 2025 is your ultimate guide to a hassle-free, cozy and utterly delightful journey. 

    Read more arrow-right-alt
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