Low-Profile Toolbox Recommendation for Heavy Bed Usage

Updated 11/02/2026 | Published 11/01/2026

Products Featured in This Question

UWS Truck Bed Toolbox w/ Pull Handles - Crossover Style - Low Profile - 8.6 cu ft - Matte Black

(9)

$865.10

Access Toolbox Edition Soft, Roll-Up Tonneau Cover

(139)

$580.55

Question:

I want a low profile tool box with tonneau cover options. 2022 F350 crew cab standard bed. Need to be able to use 5th wheel towing occasionally. I also put mtn bikes in bed sometimes. I understand with 5th wheel you need low profile for clearance. I would like black matt finish. Issue is I need to store additive in tool box and quick access with filing up diesel. The additive usually leaks and want a storage container so it does not get all over bottom of tool box. Please help.need both TB and cover.

asked by: Derrick M

Expert Reply:

Hey Derrick!

I think we can get you set up with a toolbox and tonneau cover that checks just about all your boxes! Since you're occasionally towing a fifth wheel and hauling mountain bikes, I'd definitely lean toward a low-profile toolbox paired with a soft roll-up tonneau cover. That way, you're not sacrificing access to your truck bed when you need it.

For your 2022 Ford F-350 with the 6-3/4' standard bed, I'd recommend the UWS Low-Profile Truck Bed Toolbox # UWS07647. It has the matte black finish you're looking for, measures 20" front to back, and sits just 2" above your bed rails. It also has a locking lid with pull handles, so you'll have convenient access to your diesel additive when you're filling up.

I'd pair that with the Access Toolbox Edition Soft Roll-Up Tonneau Cover # A61399. This cover is specifically designed to work behind 19" to 21" wide crossover toolboxes, so it's a good match for the UWS. It also rolls up toward the cab, giving you access to the bed when hauling your mountain bikes or hooking up your fifth wheel.

As for the leaking diesel additive, I wouldn't want that getting all over the bottom of your new toolbox either! My suggestion would be a small, removable plastic containment tray or chemical-resistant storage bin inside the toolbox. That would keep the additive bottles together, catch minor spills, and make cleanup much easier. Just make sure the container is compatible with your particular additive and has enough capacity to contain a leak.

One thing I do want to mention is fifth-wheel clearance. While this toolbox is considered low profile, it still sits 2" above your bed rails, so we'll want to make sure you have enough clearance between it and the underside of your fifth-wheel trailer. I'd hate for you to get everything installed only to discover a clearance issue when turning.

Do you already have a fifth-wheel hitch installed, and do you happen to know how much clearance you have between your trailer and the bed rails? That'll help me make sure we're recommending the right setup for everything you're wanting to do!