GarageFlow reference diagram
research review, not hands-on tested
Best stackable starter case
DEWALT TSTAK Mobile Storage Deep Box on Wheels
The best entry point into a modular system you build over time: this rolling deep box latches to every other TSTAK case, so the first purchase is never wasted once you add more.
- Best for
- Starting a modular tool system one case at a time, or hauling gear between the garage and a truck bed
- Skip if
- You want maximum capacity in a single purchase rather than an expandable system
- Installation
- Easy
- Price range
- $
Why it works
- Side latches stack and lock with any other TSTAK case
- 7-inch wheels and a telescoping handle for rolling on uneven floors
- Anti-rust metal latches
- Limited lifetime warranty
What to know
- A single box holds less than a multi-drawer cabinet
- DEWALT does not publish a total weight-capacity figure for this case
- Best value only appears once you add more TSTAK pieces
Will it fit?
Plan around the interior, not the outer shell.
- 01
The published interior is 17.3 × 12.2 × 12.4 inches; measure tools against that usable space, not the outer shell.
- 02
Leave stacking headroom if you plan to latch additional TSTAK cases on top.
- 03
The telescoping handle adds several inches to the footprint when extended for rolling.
Installation reality
The only setup is attaching the handle and wheels.
- 01
No assembly beyond attaching the included handle and wheels.
- 02
Test the side latches on an empty case before loading it, to confirm a secure stack.
- 03
Keep the heaviest tools in the bottom case if you stack multiple TSTAK units.
Evidence notes
How we reached this verdict.
Interior dimensions were confirmed directly on DEWALT’s support site for the DWST17820. Neither DEWALT’s product page nor its support documentation publishes an external dimension table or a total weight-capacity figure for this case; treat the interior measurement as the reliable planning number and confirm exterior fit against the product photos before ordering.
Primary sources
Specifications reviewed August 26, 2026. Product listings and prices can change; confirm the selected size and variant before ordering.