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Toolbox-Compatible Tonneau Covers

Tonneau covers that work with a toolbox

A tonneau cover with a toolbox in the bed has to be built for it. A standard cover runs the full length of the bed and leaves no room for a crossover box at the bulkhead. The three covers on this page are cut shorter and mount in front of the box, so the tool box and the cover share the bed instead of competing for it. Prices start at $489.99.

Extang builds two of them. The Extang Trifecta Toolbox 2.0 is a soft tri-fold, using a leather-grain vinyl tarp over an aircraft-grade aluminum frame. The Extang Solid Fold Toolbox 2.0 is the hard version, built from 1-inch EnduraShield panels on dual-pivot MaxHinges. Both use a patented L-Channel that clamps between the toolbox and the bed to bridge the gap, and both are sized for most 18 to 20 inch crossover toolboxes.

Access takes a different approach. The Access Toolbox Compatible cover is a soft roll-up in marine-grade vinyl over an aluminum frame, running an increased-capacity frame that sits about 1.5 inches above the box. Added seals at the front and rear of the toolbox close the joint where the two meet. It fits most 19 to 21 inch over-the-rail boxes, and it rolls toward the cab and stores in front of the box when the bed needs to be clear.

All three clamp on without drilling and without tools, and all three are water resistant rather than waterproof. Tool box depth decides fitment here, not bed length alone. Measure the depth of the box already in the bed and match it to the ranges above: 18 to 20 inches for either Extang cover, 19 to 21 inches for the Access.

How to choose a toolbox-compatible cover

  • Lowest cost inThe Trifecta Toolbox 2.0 starts at $489.99.
  • Hard panel securityThe Solid Fold Toolbox 2.0 uses 1-inch panels.
  • Fully open bedThe Access cover rolls up in front of the box.
  • 18 to 20 inch tool boxEither Extang cover. Both use the L-Channel.
  • 19 to 21 inch tool boxThe Access Toolbox Compatible frame is built for it.

Key capabilities

  • Cut for a toolboxShorter than a standard cover so the box fits ahead of it.
  • Sealed at the boxAn L-Channel or added box seals close the joint.
  • No-drill installationClamp-on and tool-free across all three lines.
  • Bed access retainedFolds or rolls toward the cab without removing the box.
  • Sized by box depthBuilt for 18 to 21 inch crossover boxes depending on the line.

Ideal for

  • Contractors running a crossover tool box every day
  • Owners adding a toolbox to a bed that already has a cover
  • Buyers told their current cover will not clear a tool box
  • Work trucks that need locked tools and a covered bed
  • Anyone comparing soft roll-up, tri-fold and hard folding toolbox covers

Shop by style

Compare the lineup

ProductStyleMaterialLockingStand-out
Extang Trifecta Toolbox 2.0 Soft folding tri-fold Leather-grain vinyl over aluminum Triple-fin seals, L-Channel to box Lowest cost in at $489.99
Access Toolbox Compatible Soft roll-up Marine-grade vinyl over aluminum AutoLatch II dual locking Fits 19 to 21 inch boxes, rolls up for a clear bed
Extang Solid Fold Toolbox 2.0 Hard folding tri-fold 1-inch EnduraShield panels EZ-Lock rear clamps, L-Channel to box Hard panel security, assembled in Michigan

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Why shop with Truck Bed Barn

  • Free shipping over $400Standard shipping is free on orders over $400.
  • Fitment guaranteeIf we ship the wrong cover, we pay return shipping and ship the right one.
  • Fast shipping1 to 7 business days to your door in the continental US.
  • Real person on the phoneLiam or Isaiah answers. No call center and no CSR layer.
  • Full manufacturer warrantyEach cover carries its brand's factory warranty, honored through Truck Bed Barn.

Toolbox-compatible cover FAQ

Can you use a tonneau cover with a toolbox?
Yes, with a cover built for it. A standard tonneau cover runs the full length of the bed and will not clear a crossover box. The covers on this page are cut shorter and mount in front of the box, so the tool box stays and the rest of the bed is still covered.
What size tool box do these covers fit?
Extang sizes the Trifecta Toolbox 2.0 and the Solid Fold Toolbox 2.0 for most 18 to 20 inch crossover toolboxes. Access builds the Toolbox Compatible cover for most 19 to 21 inch over-the-rail boxes. Each cover is sold on its own, so the measurement that matters is the depth of the box already in the bed.
How does the cover seal where it meets the toolbox?
Extang uses a patented L-Channel that clamps between the box and the bed and bridges the gap, so the cover seals against the box rather than ending at open air. Access adds seals at the front and rear of the toolbox. Both approaches are water resistant rather than waterproof, the same as any tonneau cover.
Does the toolbox stay usable with the cover installed?
The Extang covers mount in front of the box, so the box and its lid sit outside the covered area. The Access cover runs on a frame that sits about 1.5 inches above the box. Lid style and latch position vary between tool box brands, so check the lid swing on the box against those two mounting positions.
How much bed space does the toolbox take up?
Roughly the depth of the box, so 18 to 21 inches off the front of the bed depending on the model. The cover then spans what is left. On the Access cover the roll stores in front of the toolbox when it is open, which leaves the remaining bed length completely clear.
Do these covers require drilling?
No. All three lines clamp on and install without drilling and without tools. Extang uses Jaw-Grip front clamps and EZ-Lock rear clamps. Access uses its Tight Bite clamp system with eight clamps. Each one comes off the same way.
Can a standard tonneau cover be modified to work with a toolbox?
No. Cutting a standard cover down destroys the frame geometry, the seal, and the warranty, and it will not close against the box. A toolbox-compatible cover is manufactured at the shorter length with the sealing hardware built in. Buy the version made for it.