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Lippert 664640 Under Step Storage Box for Solid Steps -- Steel, 100 lb Capacity, 27.27 x 11.31 x 13.75 in

Lippert 664640 Under Step Storage Box for Solid Steps -- powder-coated steel, drop-down door, keyed lock, 27.27 x 11.31 x 13.75 inches
Lippert Under Step Storage Box For Solid Steps
 
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: $357.14
Part Number: 664640
Manufacturer: Lippert

Quantity in Stock :25

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Lippert 100 lb Capacity Solid Step Compatible Only Lippert 664640 Under Step Storage Box for Solid Steps

Stop wasting the void space under your RV entry -- the Lippert 664640 turns that dead area into a lockable, 100 lb rated storage compartment. Designed exclusively for use with Lippert Solid Step assemblies, this steel box slides into the opening left when your old manual flip-down steps are replaced, giving you a secure spot for leveling blocks, chocks, hoses, tools, and other bulky gear you don't want rattling around inside the rig.

More Gear, Less Clutter -- Without Adding a Hitch Cargo Carrier

The 664640 installs in the same void space your old manual steps occupied, so you're not cutting new holes or modifying your frame. The drop-down door swings open for easy access, and a sealed keyed lock (two keys included) keeps contents secure while you're traveling or parked at a busy campground.

Construction is powder-coated steel, which resists road grime, scratches, and the inevitable scuffs that come with loading and unloading gear on every trip. Mounting bracket and all hardware are included, so you're not hunting for fasteners before you can get started.

100 lb Weight Capacity

Rated to hold up to 100 lbs -- enough for leveling blocks, wheel chocks, sewer hoses, and a full toolkit combined.

Keyed Drop-Down Door

Sealed lock with two keys keeps contents secure. Drop-down door design allows full-width access to the interior.

Powder-Coated Steel

Durable steel construction with a powder-coat finish resists rust, scratches, and road debris across thousands of miles.

Hardware Included

Comes with mounting bracket and all necessary hardware -- no sourcing extra fasteners before installation.

What's In the Box

  • Lippert 664640 under step storage box (steel, powder-coated)
  • Mounting bracket
  • Installation hardware (bolts, nuts, fasteners)
  • Keyed lock (2 keys included)
Maximize Your Storage Footprint

Most RV owners use this box to store items that take up valuable interior or pass-through storage: wheel chocks, leveling blocks, sewer hose kits, work gloves, and entry mats. Keeping these items at the door step means easier setup and teardown at every campsite.

Installation Overview

The 664640 is designed to install in the void space created when Lippert Solid Steps replace the OEM manual flip-down steps. The included mounting bracket attaches to your RV's existing structure in that opening. Installation is straightforward for anyone comfortable with basic hand tools. The box weighs 25 lbs, so having a second person handy for positioning makes the job easier.

Compatibility Warning -- Read Before Ordering

This storage box is only compatible with Lippert Solid Step assemblies. It cannot be installed with OEM manual flip-down steps still in place. If you have not yet replaced your entry steps with Lippert Solid Steps, this box will not fit. Verify your step configuration before purchasing.

Why Lippert Solid Step Owners Choose This Upgrade

When you install Solid Steps, you gain a more stable entry platform -- but you also create a void where the old step mechanism lived. Without this box, that space is wasted or left open to road debris. The 664640 closes off that opening cleanly, adds usable storage, and does it with a lockable door so your gear stays put between stops.

Warranty Coverage

The Lippert 664640 is backed by a limited 1-year manufacturer warranty against defects in materials and workmanship.

Maintenance Tips
  • Periodically inspect the lock mechanism and lubricate with a silicone-based spray to prevent seizing in cold or wet climates.
  • Check mounting hardware for tightness after the first few trips -- road vibration can work fasteners loose.
  • Touch up any chips in the powder-coat finish promptly to prevent rust from forming at bare spots.
  • Do not exceed the 100 lb weight rating; overloading can stress the mounting bracket and door hinges.

Product Specifications

ManufacturerLippert Components
Part Number664640
Vendor Part NumberLIP664640
UPC848150060792

Dimensions and Weight

Overall Dimensions27.27 in x 11.31 in x 13.75 in
Unit Weight25 lbs
Weight Capacity100 lbs

Construction and Materials

Body MaterialSteel
FinishPowder-coated (scratch and rust resistant)
Door StyleDrop-down with hinge
Lock TypeSealed keyed lock
Keys Included2

Compatibility and Fitment

Required Step SystemLippert Solid Step assembly (mandatory)
Incompatible WithOEM manual flip-down step assemblies
Installation LocationVoid space under doorjamb where manual steps were removed

What's Included

Storage BoxYes -- powder-coated steel
Mounting BracketYes -- included
Installation HardwareYes -- included
Keys2 keys included

Warranty

WarrantyLimited 1-year manufacturer warranty
Important Information -- Please Read Before Installing
  • This storage box is ONLY compatible with Lippert Solid Step assemblies -- it will not fit or function with OEM manual flip-down steps.
  • Solid Steps must already be installed (or purchased simultaneously) before this box can be mounted.
  • Maximum weight capacity is 100 lbs -- do not exceed this limit to avoid damage to the mounting bracket, hinges, or your RV structure.
  • Box weighs 25 lbs -- use caution and consider a helper when lifting into position during installation.
  • Inspect mounting hardware periodically; road vibration can loosen fasteners over time.
  • This product is not a waterproof enclosure -- avoid storing items sensitive to moisture without additional protection.
SOLID STEP 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 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 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


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