How we made this guide: picks and specs come from our catalog and fitment data, owner quotes come from verified reviews and the guide was drafted with AI help, then checked and edited by Trevor Hall.
Yes: a toolbox-edition cover such as the Extang Trifecta Toolbox 2.0 (from $489.99), the Access Toolbox Edition (from $580.55) or the Extang Solid Fold Toolbox 2.0 (from $1,249.99) lets a tonneau cover and a crossover box share the bed. For most owners the Trifecta Toolbox 2.0 is the pick: the least expensive of the three and the best rated (4.7 from 97).
All three start behind a crossover box, so they cover a shorter length of bed than a standard cover and are ordered for the box, not just the bed. The second route keeps the box out of the cover's way. An underbody box bolts under the bed, so any cover fits. A wheel-well box or a chest box sits on the bed floor, and it works under a standard tonneau cover only if its lid clears the underside of the cover, including the cross bows on a soft cover. Low-profile crossover boxes still sit on the rails, so they need a toolbox edition, not a standard cover. Either way the box keeps its own lock, and the cover is only as secure as a locked tailgate.
Quick answer
Crossover box (the kind that spans the bed behind the cab, low-profile or full height): buy a toolbox edition and measure the box depth first. Underbody, wheel-well or chest box: keep a standard cover and check the lid height against the room under it. Not sure which you own? The next section sorts it out.
Every cover in this guide side by side
| Cover | Type | Toolbox route | Bed access | Lock | Water | From | Warranty |
|---|---|---|---|---|---|---|---|
| Access Toolbox Edition | Soft roll-up | Crossover box, 19 to 21 in | Rolls forward to the box | AutoLatch II latches; locks with the tailgate | Foam gaskets | $580.55 | 5 years |
| Extang Trifecta Toolbox 2.0 | Soft folding | Crossover box, 18 to 20 in deep | Folds forward; lifts off | Clamps on the rails; box has its own lock | Triple-fin seals | $489.99 | Listed lifetime; document says 5 years |
| Extang Solid Fold Toolbox 2.0 | Hard folding | Crossover box ahead of the cover | Two-thirds; all with it off | Hand clamps; box has its own lock | Triple-fin seals, corner and hinge caps | $1,249.99 | 3 years |
| Extang Trifecta 2.0 | Soft folding | Box below the cover (underbody, wheel-well or chest) | Two-thirds; all with it off | Clamps | Triple-fin seals | $469.99 | Limited lifetime |
| TruXedo Lo Pro | Soft roll-up | Box below the cover (underbody, wheel-well or chest) | Nearly full | Trigger latch | Rubber seals | $519.99 | Limited lifetime |
| Access Original | Soft roll-up | Box below the cover (underbody, wheel-well or chest) | Whole bed | AutoLatch II latches; locks with the tailgate | Gaskets on four sides | $560.15 | 5 years |
| BAKFlip MX4 | Hard folding | Not with a crossover box; box below the cover only | 100% | Auto-latch; locks with the tailgate | Drain tubes | $1,199.99 | 5 years |
| RetraxPRO MX | Retractable | Not with a crossover box | Retracts into a cab-end canister | Key-lockable handle | Drain tubes | $2,149.99 | Limited lifetime |
The first three rows are built around a crossover box. The rest are standard covers that suit a box sitting below them, or do not suit a crossover box at all. Prices are starting prices; your truck and bed set the exact figure.
How a tonneau cover and a toolbox share the bed
A standard cover is cut to run from the bulkhead (the bed wall behind the cab) to the tailgate. A crossover box sits across the bed in that same front space, so a standard cover would land on top of the box and fail to seal. Toolbox editions fix this by starting behind the box. An L-Channel, a metal strip at the front of the cover, bridges the gap between the box and the cover, and an adjustable seal closes it.
That is why the cover covers a shorter length of bed. The Access Toolbox Edition is listed for most over-the-rail boxes 19 to 21 inches, and its sealing header bar suits most 20 to 21 inch boxes, so a 19 inch box needs a closer check. The Trifecta Toolbox 2.0 is listed for 18 to 20 inches. Measure your box front to back before you order, because a box outside the range leaves the cover too short or too long.
Need a box first? Our crossover tool boxes come in standard and low-profile heights; check the depth against the cover's range.
The other route leaves the crossover box out. Browse underbody tool boxes, wheel-well tool boxes and chest tool boxes, or the full truck tool box range. This keeps the full-length cover but depends on height: the box lid must stay below the underside of the cover. We cover both routes below.
In our range the toolbox editions are listed for eight full-size truck lines: Chevy Silverado 1500 and HD, GMC Sierra 1500 and HD, Ford F-150 and Super Duty, Ram 1500 and the Ram 2500 and 3500. The Access and Solid Fold editions also list the Toyota Tundra. Year and bed coverage differs by cover (the Trifecta Toolbox 2.0 lists only the 2021 to 2026 F-150 6'7" bed, for example), so check your truck on the part page. We list none for midsize trucks such as the Tacoma, Colorado or Ranger, so those owners should look at the box-below-the-cover route.
How we picked
No truck testing sits behind this guide. Picks come from our catalog: spec sheets, written warranties, the truck lines each cover is listed for and the owner reviews on file. Of the three toolbox editions, the Extang Trifecta Toolbox 2.0 (97 reviews, 4.7 average), the Access Toolbox Edition (145 reviews, 4.6 average) and the Solid Fold Toolbox 2.0 (81 reviews, 4.6 average) all have reviews on file, and we read all 145 of the Access ones. We also read 200 reviews each of the Access Original and the TruXedo Lo Pro, and none describes a tool box under the cover. For a box under a cover that is not a toolbox edition we only say what the sheet shows and send you to the fit check.
Best soft folding: Extang Trifecta Toolbox 2.0
Best soft folding
Extang Trifecta Toolbox 2.0 Soft Folding Tonneau Cover
From $489.99 · The least expensive toolbox edition in our range, with tool-free clamps.
This is the one to start with if your box is a crossover. A leather-grain vinyl tarp rides on an aircraft-grade aluminum frame, folds forward to the toolbox and lifts off without tools. Snap-on triple-fin seals run along the rails, and the adjustable L-Channel seal takes up small differences in how the box sits. The spec sheet states that cargo must not touch the tarp, so it is a cover for dry bags and gear, not a loading platform.
Owners like how it fits around a box. One wrote:
“I didn't want to give up our crossover box but wanted a tonneau cover and this was perfect.”
Extang Trifecta Toolbox 2.0 owner · 5 out of 5 stars
The same buyer asked for one more thing, a seal on the cab side of the box. The channel seals the cover side only, so water can still reach the bed from the other side of the box. One owner had to move the box back about 2 inches to get the seal to overlap, so check the gap before you bolt the box down.
Pros
- Least expensive toolbox edition in our range
- Folds forward and lifts off without tools
- Triple-fin seals plus an adjustable seal at the L-Channel
Cons
- Covers less bed than a standard Trifecta
- No seal on the cab side of the box
- One owner reports rear latches that need adjusting to stop flutter
Skip it if your box is a low-profile or plastic model, is outside 18 to 20 inches deep or your bed has a Utili-Track system. Skip it too if you want a lock on the cover itself. Extang lists it for none of those first three.
Best roll-up: Access Toolbox Edition
Best roll-up
Access Toolbox Edition Soft Roll-Up Tonneau Cover
From $580.55 · Rolls forward to the box and sits about an inch and a half above the rails.
The Access Toolbox Edition is a marine-grade vinyl roll-up over an aluminum frame. It sits about one and a half inches above the bed rails and rolls forward to the box rather than the bulkhead. Waterproof foam gaskets seal the vinyl. AutoLatch II latches hold the rear edge, and locking the tailgate locks the cover. The side rails clamp on, so there is no drilling.
It is the one to pick if you want a roll-up. Access gives a 5-year limited warranty, longer than the 3 years on the hard folding Extang below. It has 145 owner reviews averaging 4.6. The reviews bear out the box check: 11 of the 145 describe a gap at the box, and 6 of the 7 that name a 19 inch box report one. Fifteen of the 145 report or expect some water getting in. Install draws its own complaints, with 21 of the 145 finding fault with the instructions and 9 with the rail clamps.
“Does not work with 19 inch tool box leaves a 2 inch gap for water to get in”
Access Toolbox Edition owner · 4 out of 5 stars
Pros
- Rolls forward to the box in a single move
- 5-year limited warranty
- Clamp-on rails with no drilling
Cons
- Vinyl can be cut and the cover has no key
- Covers only the bed behind the box
Skip it if your box is outside the 19 to 21 inch range or you leave tools in the bed overnight.
Best hard folding: Extang Solid Fold Toolbox 2.0
Best hard folding
Extang Solid Fold Toolbox 2.0 Hard Folding Tonneau Cover
From $1,249.99 · Rigid composite panels that butt up to the box.
This is the only hard cover in our range built to sit behind a crossover box. One-inch EnduraShield TPO composite panels sit on an aluminum frame, with snap-on triple-fin perimeter seals, hard polymer corner and hinge caps and an adjustable L-Channel at the box. Hand-tightened clamps hold it on with no drilling, and Extang assembles it in Michigan. Bed access is two-thirds with the cover folded forward and the whole bed once you lift it off.
Owners with a box call it easy to live with:
“It butts up nicely to the toolbox and the water channel seems to catch water just fine.”
Extang Solid Fold Toolbox 2.0 owner · 5 out of 5 stars
It is not flawless. A 3-star review said the front panel that butts up to the box sits higher and does not seal to the bed:
“The front panel that butts up to the tool box and sits on top of the cross support sits higher and does not seal to the truck bed.”
Extang Solid Fold Toolbox 2.0 owner · 3 out of 5 stars
Pros
- Rigid panels for owners who want a hard cover
- No drilling and tool-free removal
- Triple-fin seals and hinge caps
Cons
- Highest price of the three toolbox editions
- Folded stack is a reach from the bed to the box, as one owner noted
- Leaks come up in 9 of the 58 reviews we checked
- Latches unclip on each side, with no single-pull release
- Warranty is 3 years, shorter than the other two toolbox editions
Skip it if you want a published load rating, since Extang does not list one for the toolbox version, or if you need a key lock on the cover.
Standard covers with an underbody, wheel-well or chest box
If your box sits below the cover, you do not need a toolbox edition. Match the lid height to your cover. We leave box dimensions out here because they differ by model. Check the height on the box page and compare it with the room under your cover.
Height works against you here. The Lo Pro's rails mount down inside the bed and the closed cover finishes 3/4 inch above the rail line, so it leaves the least room under it of the covers in this guide. The Access Original sits about 1.5 inches above the rails. Measure from the box lid to the top of the bed rail and check the part page for the rail and bow depth before you pair either one.
Standard roll-up with a box below the cover: TruXedo Lo Pro
Flattest look
TruXedo Lo Pro Soft Roll-Up Tonneau Cover
From $519.99 · Closed cover sits 3/4 inch above the rail line.
The Lo Pro suits an underbody box, or a wheel-well or chest box that sits well below the rails, when you want the flattest look. A spring tensioner keeps the vinyl taut and one trigger latch releases it. TruXedo backs it with a limited lifetime warranty. It has 1,285 owner reviews averaging 4.8. None of the 200 reviews we checked describes a tool box under the cover, so they give no owner evidence on its fit with a box. On water, 5 of the 200 say there are no leaks, 2 describe only a little water getting in and the 8 that report leaks, several at the corners, are all rated 1 to 3 stars. Another 4, also rated 1 to 3 stars, say it did not fit their bed. Treat its fit with a box as a check-fit question, not a promise.
Pros
- Only 3/4 inch above the rail line
- Opens nearly the whole bed in seconds
- Limited lifetime warranty
Cons
- Water can pool on the flat bows until you drive off
- Vinyl can be cut and the cover has no key
Skip it if your box lid is taller than the cover's underside, or tools stay in the bed overnight.
Best folding cover over a box: Extang Trifecta 2.0
Standard Trifecta
Extang Trifecta 2.0 Soft Folding Tonneau Cover
From $469.99 · Full-length soft folding cover with 1,290 owner reviews.
The standard Trifecta 2.0 has 1,290 owner reviews averaging 4.7, and one of them is from a toolbox owner who had a leaky hard cover on a previous pickup:
“This sealed above the box, light, & I’m able to raise the lid of my tool box.”
Extang Trifecta 2.0 owner · 5 out of 5 stars
Another Trifecta owner has built-in tool boxes in a Titan XD bed and says it fit them. That is one truck, not a rule, so confirm your box and bed on the part page. Opening is two-thirds forward, with the whole bed once you release the front clamps and lift it off. It takes less than an hour to fit with no drilling.
Pros
- Full-length cover with tool-free clamps
- Triple-fin seals at rails, bulkhead and tailgate
- Limited lifetime warranty
Cons
- Two-thirds of the bed opens while it is fitted
- A few owners say the rear latches stick and the tarp flaps on the highway
Skip it if your crossover box sits against the bulkhead. This cover starts at the front of the bed.
Access Original: a full-length roll-up with a box below it
Roll-up over a low box
Access Original Soft Roll-Up Tonneau Cover
From $560.15 · Rolls to the bulkhead with the whole bed open.
The Access Original is the full-length twin of the Toolbox Edition: same semi-gloss grained finish, about 1.5 inches above the rails, rolls forward to the bulkhead for a clear bed. Double-coated commercial-grade vinyl, an ELEMENT SEAL gasket on four sides and a Tight Bite clamp mount make up the build, with a 5-year limited warranty. Pair it with a box below the cover only after checking the lid height. Rolling it up is the way to reach the box lid. It has 299 owner reviews averaging 4.8. None of the 200 reviews we checked describes a tool box under the cover, so the lid-height check is the only guide. What the reviews do show: 10 of the 200 mention trouble with the rail clamps, and 4 report or expect some water getting in, against 12 that call the bed dry or the cover watertight.
Pros
- Whole bed opens
- ELEMENT SEAL gasket on four sides
- 5-year limited warranty
Cons
- No key, so it locks only with the tailgate
Skip it if your box is a crossover model; that is what the Toolbox Edition is for.
Toolbox edition vs standard cover
A toolbox edition makes sense when the box is already bolted in and you plan to keep it. A standard cover plus a box below it suits owners who want a full-length cover and will pick the box to fit. The extra choice is the type of cover: soft folding covers like the Trifecta cost the least of the toolbox editions, while hard folding covers add rigid panels and a higher price.
Hard folding covers need more care with a box. The BAKFlip MX4 folds flush against the cab, the same space a crossover box wants, so it is not a match for one.
Hard folder, box below the cover
BAKFlip MX4 Hard Folding Tonneau Cover
From $1,199.99 · Standard hard folding cover; pair it with an underbody box or a box that clears the panels.
Retractables add a canister at the cab end of the bed that holds the rolled cover. The RetraxPRO MX is listed as not toolbox compatible, so pair it only with an underbody box.
Retractable, no crossover box
RetraxPRO MX Retractable Tonneau Cover
From $2,149.99 · Key-lockable cover for a bed with an underbody box; the canister takes the space a crossover box needs.
For the full run-down of types see types of truck bed covers, the best roll-up covers and the best soft roll-up covers. Hard folders are covered in our hard folding guide.
Security with a toolbox
A toolbox adds a lockable compartment, but it does not make the cover more secure. A folding or roll-up cover protects the bed only when the tailgate is locked, and soft vinyl can be cut. The toolbox keeps its own lock, so valuables go in the box and bulk gear goes under the cover. No toolbox edition has a lock of its own on the cover, so the tailgate lock is the one that counts.
Video: installing a toolbox cover
This short walk-through shows the Extang Trifecta Toolbox, including the front channel that bridges to the box.
Care and lifespan
With a crossover box, the weak spot is usually the join at the box. Look over the seal there after heavy rain. One Trifecta Toolbox owner who folds the cover three times a week reports the cover still looks new after four years:
“It remains taut and in perfect condition.”
Extang Trifecta Toolbox 2.0 owner · 5 out of 5 stars
The same owner says most of the water that does get in comes from the cab side of the box, and notes the plastic tie clips going brittle in the Florida sun:
“The majority of what actually does get in comes from the cab side of the toolbox as it is.”
Extang Trifecta Toolbox 2.0 owner · 5 out of 5 stars
Never drive a Trifecta part way open. Fold it fully and fasten both buckle straps first, which keeps the tarp from flapping. For a rolled cover, strap the roll so it cannot flap at speed. Keep cargo off a soft tarp, and load tall items by lifting the cover off where the part page says it releases.
Common mistakes
- Measuring the box width instead of its depth front to back.
- Buying a Trifecta Toolbox 2.0 for a low-profile or plastic box.
- Bolting the box down before checking the seal overlap at the L-Channel.
Price bands for cover and toolbox combinations
- Under $500: the Trifecta Toolbox 2.0 starts here, and so does the standard Trifecta 2.0 for a box that sits below the cover.
- $500 to $1,000: the Access Toolbox Edition and the Access Original, plus the TruXedo Lo Pro.
- Over $1,000: the Solid Fold Toolbox 2.0, the BAKFlip MX4 and the RetraxPRO MX.
For more on cost by cover type, see how much a tonneau cover costs. The Access range has both roll-ups listed above.
Frequently asked questions
Is there a tonneau cover that works with a tool box?
Yes. In our range the Access Toolbox Edition, the Extang Trifecta Toolbox 2.0 and the Extang Solid Fold Toolbox 2.0 are built around a crossover box. A standard cover can also work over an underbody, wheel-well or chest box if the lid clears the underside of the cover.
Can you have a bed cover and a tool box?
You can. The bed has to hold both, which means either a cover that starts behind a crossover box or a box that sits below a full-length cover. Measure the box depth or height before you buy.
How do I make a tonneau cover fit with a tool box?
Start with the box, not the cover. Measure its depth front to back, and its lid height if it sits under the cover, then pick a toolbox edition for a crossover box. Use the bed guide in how to measure your truck bed for the length.
Can I use a roll-up tonneau cover with a toolbox?
Yes. The Access Toolbox Edition is a roll-up that rolls forward to the box. A standard roll-up such as the Lo Pro or the Access Original can work over an underbody, wheel-well or chest box once you check the height.
Is there a hard tonneau cover that works with a toolbox?
In our range, the Extang Solid Fold Toolbox 2.0 is the hard folding cover built to sit behind a crossover box. Other hard folders suit only a box that sits below the cover.
Is it safe to go through a car wash with a tonneau cover?
Many owners do, but results vary by type. One MX4 owner reports only a few drips after a wash. Our guide to car washes and tonneau covers goes through it by cover type.
Does a toolbox edition cover the whole bed?
No. It covers the length behind the box. That is why it must be ordered for the box and the bed together.
Find a toolbox-ready cover for your truck
Related guides
- Types of Truck Bed Covers: Every Tonneau Style Compared
- Best Roll-Up Tonneau Covers: Soft and Hard Picks for Every Budget
- Best Soft Roll-Up Tonneau Covers: TruXedo vs Access vs Extang Compared
- Best Hard Folding Tonneau Covers: Picks for Security, Budget and Racks
- How to Measure Your Truck Bed for a Tonneau Cover (With Bed Size Chart)