Flatline Van Co. Slim Rear Storage Box - 3.25 Cu Ft Aluminum Exterior Van Storage
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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.
Thank you for trusting us with your order! This product is shipped directly from the manufacturing warehouse to get to customers all over the U.S. as soon as possible!
While many of our products are prepared and shipped out within 48 hours, some of our items are built to order or require custom pieces that could take 2-6 weeks to prepare before shipping! Please contact us at 888-884-2234 for a delivery ETA if you have a strict timeline.
Thanks!
Omaha Sports & Games Team
Returns & Refunds Policy
Return Policy
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase. To start a return, you can contact us at service@omahasportsandgames.com.
If your return request is accepted, it will be up to you as the buyer to return the item in its original packaging, unworn and unused. You as the buyer will be responsible for paying the return shipping. We may be able to assist you in scheduling a pickup for return but the payment will still be your responsibility. You can always contact us for any return question at service@omahasportsandgames.com.
All products are subject to a minimum 15% restocking fee based on the quality of the returned product and packaging.
Items opened, tested, used, or any other non-new condition may be eligible for return based on the manufacturer's return policy.
Shipping Damages and Issues
You must inspect your order upon reception and refuse delivery if you see damage. DO NOT sign for delivery if there is apparent damage to the product. If you sign for the delivery and later claim shipping damage, there is very little we can do to help.
If your order does not require signing at delivery and is instead just dropped off at doorstep with damage, contact us immediately with photos of the damaged boxes.
If your item(s) is defective, damaged or if you receive the wrong item, contact us immediately so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
Certain types of items cannot be returned, such as custom products, special orders or personalized items. Please get in touch if you have questions or concerns about your specific item.
Unfortunately, we cannot accept returns on sale items, gift cards, or multiple product bundle discounts.
| Specification name | Specification Value |
|---|---|
| Color pattern | Black, Silver |