Storage Enclosures & Drom Units for Semi Trucks
Every mile on the road adds up, and so does everything a driver needs to carry to do the job right. Tools, chains, spare parts, gear for the sleeper, freight that won't fit anywhere else.
Wickum Weld manufactures storage enclosures and drom units built to give Class 8 trucks the extra capacity long-haul work demands, without cutting corners on durability or fit.
What Is a Drom Unit?
A drom unit, short for "dromedary," is a storage deck mounted between the cab and trailer of a Class 8 truck, giving owner-operators and fleet drivers extra room to haul tools, gear, or freight that wouldn't otherwise fit. Wickum Weld manufactures Drom Units from marine-grade aluminum, built to handle the weight and vibration of daily long-haul work without adding unnecessary bulk to the truck.
The drom unit sits between the cab and the trailer's kingpin, effectively extending the wheelbase of the truck. That extra deck space is what allows drivers to haul more without relying on trailer space that's better used for freight. For owner-operators running long routes, that additional capacity often makes the difference between carrying everything needed for the job and leaving something behind.
Storage Enclosures and drom units are both part of our Heavy-Duty Collection, and each can be ordered on its own or combined into a single build. A drom unit paired with a Storage Enclosure — or with a Class 8 Cab Rack — is commonly ordered as a drom enclosure, giving drivers deck storage, enclosed compartment space, and rack capacity in one configuration. Whether you need a single product or a combined build, our team manufactures each setup to match the truck and the route.
This flexibility matters when planning a build. A drom unit adds deck-level storage between the cab and trailer, a Storage Enclosure is a lockable standalone compartment, and a Class 8 Cab Rack adds overhead capacity — and any of these can be manufactured together as a drom enclosure when a driver's setup calls for it. Understanding which combination solves your specific storage problem helps our team manufacture the right setup the first time.
Sleeper Cab Storage Units
For sleeper cab configurations, additional enclosed storage keeps gear, chains, and personal items organized and out of the cab itself. Wickum Weld manufactures sleeper-adjacent storage enclosures designed to work alongside a sleeper setup without interfering with cab access or trailer clearance. Every enclosure is hand crafted with secure, lockable access points so drivers can reach what they need at a stop without digging through the cab.
Long-haul drivers spending days or weeks at a time in a sleeper cab need a place for gear that isn't competing for space with their living quarters. Chains, tie-downs, spare parts, and personal belongings all need a home that keeps the cab livable while still being reachable at a rest stop. Our sleeper-adjacent enclosures are manufactured with that daily use in mind, built to hold up to repeated opening and closing without hardware failure or water intrusion.
Because every sleeper cab configuration is different, our team works with drivers and fleet managers to determine placement that doesn't interfere with cab entry, trailer clearance, or existing mounted accessories. The goal is storage that works with the truck's layout, not against it.
Standard Drom Unit Sizes
Wickum Weld manufactures drom units in a range of standard deck lengths and widths to fit different truck configurations and hauling needs. Deck dimensions are selected based on the wheelbase, trailer setup, and the amount of storage capacity a driver or fleet needs on the road. Our team can walk through standard sizing options to help match a drom unit to your specific truck.
Sizing a drom unit correctly depends on more than just how much storage a driver wants. Overall truck length, turning radius, and state-by-state length regulations all play a role in what deck length makes sense for a given route. A driver running mostly interstate highways has different flexibility than one navigating tighter regional roads, and our team factors that into the sizing conversation before any manufacturing begins.
Standard sizing also helps keep lead times predictable for fleet managers outfitting multiple trucks. When a fleet needs consistency across several units, working within standard deck dimensions makes scheduling and installation more straightforward across the whole operation.
Custom Enclosures
Every operation hauls differently, and a standard size doesn't always fit the job. Wickum Weld manufactures custom storage enclosures with options for compartment configuration, locking hardware, and mounting to fit your exact truck and route. Whether you need additional interior dividers, a specific door configuration, or a unique size configuration, our team manufactures each enclosure to your specifications.
Custom work is where a lot of our Heavy-Duty Collection customers land. A driver hauling specialty tools might need internal dividers to keep equipment from shifting in transit. A fleet manager standardizing across a mixed group of trucks might need enclosures built to a non-standard length to match an older truck's wheelbase. Whatever the specific need, our team manufactures the enclosure around the truck and the job, not the other way around.
Custom orders go through the same marine-grade aluminum construction and manufacturing process as our standard products. The only difference is the specifications, not the quality or durability of the build.
Install & Specs
Wickum Weld Storage Enclosures and Drom Units are manufactured from marine-grade aluminum and built to mount securely to the truck frame. Installation is handled with your truck's specific wheelbase and trailer setup in mind. Contact our team with your truck's make, model, and configuration, and we'll help determine the right fit and specs for your build.
Before manufacturing begins, our team gathers the details that matter most for a proper fit: truck make and model, wheelbase length, trailer type, and how the storage will be used day to day. That information determines mounting points, deck length, and whether a standard or custom configuration makes the most sense.
Getting the specs right up front means a smoother installation and a product that performs the way it should from day one. If you're not sure what information to have ready, our team can walk you through exactly what's needed before you place an order.
