Flatline Van Co

Flatline Van Co. Slim Rear Storage Box - 3.25 Cu Ft Aluminum Exterior Van Storage

Regular price $1,295.00 USD

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Flatline Van Co. Slim Rear Storage Box mounted on van exterior
$1,295.00 USD
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Flatline Van Co. Slim Rear Storage Box


Description

The Slim Rear Storage Box from Flatline Van Co. is a fully welded aluminum exterior storage solution built specifically for van life, overlanding, and work van setups. Engineered to maximize usable space without adding bulk, this slim-profile box mounts cleanly to the rear of your van and adds over 3.25 cubic feet of secure, weatherproof storage. Whether you're hauling gear for a weekend adventure or keeping tools organized on the job, this box keeps everything protected and accessible.

The dual-door design is loaded with thoughtful details - a built-in Molle panel on the upper door interior, a lower door that doubles as a work surface or counter when dropped to 90 degrees, and accessory load panels on both door faces for 3/8" hardware mounting. A weatherproof bulb seal, natural gutter system, and bottom drain plugs ensure your gear stays dry and easy to clean. Gas struts keep the doors operating smoothly, and locking adjustable compression latches lock everything down tight.


Key Features

  • 3.25+ Cu Ft of Storage: Adds meaningful exterior storage capacity without significantly widening your van's profile.
  • Fully Welded Aluminum Construction: Lightweight yet rugged - built to handle the elements and daily use on the road or job site.
  • Weatherproof Bulb Seal and Gutter System: Keeps the interior dry in rain and wet conditions; drain plugs at the bottom make cleanup easy.
  • Locking Adjustable Compression Latches: Secure, tunable latches that lock the doors firmly and resist vibration on the road.
  • Built-in Molle Panel: Upper door interior features a Molle panel for organizing tools, pouches, and accessories.
  • Lower Door Work Surface: Opens to 90 degrees and locks in place with a down-stay rod - instant counter space or work area, always ready.
  • Accessory Load Panels: Both door faces accept 3/8" hardware for mounting additional accessories.
  • Adjustable Gas Struts and Hinges: Smooth door operation and adjustable fitment for long-term reliability.
  • Adjustable Height Shelf Included: Interior shelf with L-track gives you a customizable layout right out of the box.
  • Stainless Steel Hardware and Powder Coat Finish: Corrosion-resistant components and a durable finish that holds up to outdoor exposure.
  • Easy Four-Bolt Installation: Mounts directly to FVC Rear Door Platforms with four hex bolts; also fits Owl B2 with FVC Adapter Brackets.

Shipping

Ships free! Please email us at service@omahasportsandgames.com for a delivery ETA or to confirm shipping details.


What's Included

  • Slim Rear Storage Box (fully welded aluminum)
  • Adjustable height interior shelf with L-track
  • Down-stay rod for lower door
  • Stainless steel mounting hardware

Why You'll Love It

Flatline Van Co. builds products for people who take their vans seriously - weekend adventurers, full-time van lifers, and hardworking tradespeople alike. The Slim Rear Storage Box has earned a 5-star rating from real van owners who praise its build quality, ease of installation, and ability to permanently solve exterior storage challenges. Customers consistently note that the quality exceeds expectations, with one buyer calling it "6 stars" after outfitting both sides of their van. The slim profile means you can park in standard-size spots without worry, and the lower door work surface is the kind of practical feature that makes daily use genuinely enjoyable. Engineered from the ground up with a direct-fit mounting system for FVC Rear Door Platforms, this is purpose-built van storage - not an afterthought.


Product Specifications

View Product Specs
Overall Dimensions 30.24" tall x 20" wide x 12.97" deep
Opening Dimensions 26" tall x 17.3" wide
Interior Dimensions 30" tall x 19.75" wide x 9.75" deep
Interior Shelf Dimensions 18.7" wide x 6.7" deep x 1.8" front lip
Storage Capacity Over 3.25 cubic feet
Weight 50 lbs
Material Fully welded aluminum with stainless steel components
Finish Durable powder coat
Fitment Universal; designed for FVC Rear Door Platforms; fits Owl B2 with FVC Adapter Brackets
Assembly Required Minimal - mounts with four hex bolts to FVC Rear Door Platform
SKU UN1117B

Manuals & Guides


FAQ

Does this box fit my van without a Flatline Van Co. Rear Door Platform?

The Slim Rear Storage Box is designed to mount directly to FVC Rear Door Platforms using four hex bolts for the cleanest, most secure fit. It also fits the Owl B2 using FVC Adapter Brackets. If you don't already have a compatible platform, we recommend pairing it with the appropriate FVC Rear Door Platform for your van model. Contact us at service@omahasportsandgames.com and we can help you figure out the right setup for your specific van.

Is this box truly weatherproof?

Yes - the Slim Rear Storage Box is built with a weatherproof bulb seal around the doors and a natural gutter system to channel water away from the interior. Drain plugs at the bottom allow any moisture that does get in to be easily cleared out. It's designed for year-round outdoor use in all weather conditions.

What can I use the lower door work surface for?

The lower door opens to a full 90 degrees and locks in place using the included down-stay rod, creating a stable, flat surface that works great as a camp kitchen prep area, a workbench for tools, or a gear staging area. The down-stay rod can be removed if you prefer unrestricted door swing for deeper access.

How long does installation take?

Most customers report a very straightforward installation process. The box mounts with four hex bolts that align directly with FVC Rear Door Platforms - no drilling or custom fabrication required. Many owners complete the install in under an hour, and one reviewer noted it took longer to break down the packaging than to mount the box itself.

Is the interior shelf adjustable?

Yes, the Slim Rear Storage Box includes an adjustable height shelf with L-track so you can customize the interior layout to fit your gear. Whether you're storing tall items, tools, hoses, or outdoor equipment, you can position the shelf to suit your needs.


Product specifications table
Specification name Specification Value
Color pattern Black, Silver

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