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Hinged / One-Piece Tonneau Covers

Shop By Make And Model

One-piece hinged tonneau cover lineup

A one-piece tonneau cover is a single rigid lid that hinges up from the front of the bed — like a trunk on top of your truck. You get the cleanest factory-integrated look in the tonneau category (especially with paintable body-match finishes), the strongest single-piece weather seal, and full bed access by lifting one panel instead of folding or rolling sections. The trade-off is that the cover lifts in one piece, so you cannot drive with it open the way you can with a folding or roll-up cover.

UnderCover is the only brand at Truck Bed Barn that builds one-piece hinged covers, and they make four masters across two material tiers. The fiberglass-reinforced ABS line: the UnderCover LUX ($999.99 — ships paintable for body-color match) and the UnderCover SE ($1,099.99 — textured matte black finish). The premium Elite tier with smoother lines and reinforced internals: the UnderCover Elite ($1,199.99) and the UnderCover Elite LX ($1,249.99 — ships paintable for body-color match).

All four covers share the same construction core: a fiberglass-reinforced ABS shell, gas-strut assisted lift, integrated lock cylinders that lock from both sides, full perimeter weather seals, and a no-drill clamp-on install that takes most owners under an hour. The LX and SE variants give you the body-match option; the Elite and Elite LX add tighter panel gaps, reinforced internals, and the smoothest exterior finish in the category.

UnderCover one-piece covers are sized for each truck make, model, year, and bed length — the wrong size will not seal. Run your truck through the fitment tool or message us before you order. Fitment is verified before every cover ships.

How to choose a one-piece tonneau cover

  • If you want a body-match paintable finishUnderCover LUX ($999.99) or Elite LX ($1,249.99) — both ship primered and ready for body-color paint to match your truck.
  • If you want matte black out of the boxUnderCover SE ($1,099.99) — textured matte black finish, no painting required.
  • If you want the premium tierUnderCover Elite ($1,199.99) or Elite LX ($1,249.99) — reinforced internals, tighter panel gaps, smoothest exterior finish.
  • If budget is the priorityUnderCover LUX ($999.99) — the lowest-priced one-piece tonneau on the site, and you can still paint it body-color.
  • If you need to remove the cover oftenAny UnderCover one-piece — the entire cover lifts off in one piece by detaching the gas struts. Heavier than a folding cover but cleaner once off.

Key capabilities

  • Single-piece lift for full bed accessGas-strut assisted lift on every UnderCover one-piece. Open the lid, full bed access, no folding or rolling.
  • Paintable body-match finish (LUX, Elite LX)LUX and Elite LX ship primered and ready for body-color paint. Match your truck's exact paint code for a fully integrated look.
  • Fiberglass-reinforced ABS constructionAll four covers use the same FRP/ABS shell — stronger than vinyl, lighter than aluminum, paintable, weather-tight.
  • Integrated dual-side locksLock cylinders on both sides of the cover plus the tailgate lock = bed and tailgate secured together.
  • No-drill clamp-on installEvery UnderCover one-piece clamps to the bed rails in under an hour. Standard hand tools, one person, no permanent modifications.

Ideal for

  • Owners who want a fully body-color-matched cover that looks factory installed
  • Daily drivers who park in public lots and want a single-piece locked bed
  • Buyers who prioritize a smooth painted finish over folding flexibility
  • Truck owners who rarely need to remove the cover (one-piece is heavier off the truck)
  • Owners comparing UnderCover SE, LUX, Elite, and Elite LX in one place

Shop by style

Compare the lineup

ProductStyleMaterialLockingStand-out
UnderCover LUX One-Piece Hinged Fiberglass-reinforced ABS Dual-side integrated locks + tailgate $999.99 entry, paintable body-match
UnderCover SE One-Piece Hinged Fiberglass-reinforced ABS Dual-side integrated locks + tailgate Textured matte black, no paint needed
UnderCover Elite One-Piece Hinged Reinforced FRP/ABS Dual-side integrated locks + tailgate Premium tier, tighter panel gaps
UnderCover Elite LX One-Piece Hinged Reinforced FRP/ABS Dual-side integrated locks + tailgate Elite tier with paintable body-match

Related collections

Why shop with Truck Bed Barn

  • Free shippingEvery order ships free in the lower 48.
  • Free fitment checkWe verify the cover fits your exact truck before it ships.
  • Fast shipping (1–7 days)Most orders deliver within a week.
  • Talk to a real personCall or text us before you order. No chatbots, no scripts.
  • Full manufacturer warrantyEvery cover ships with the full UnderCover factory warranty.

One-piece tonneau cover FAQ

What is a one-piece tonneau cover?
A one-piece tonneau cover is a single rigid lid that hinges up from the front of the bed, like a trunk on top of your truck. It gives you the cleanest factory-integrated look in the tonneau category (especially with paintable body-match finishes), the strongest single-piece weather seal, and full bed access by lifting one panel. The trade-off is you cannot drive with it open the way you can with a folding or roll-up cover.
Which UnderCover one-piece is best?
The Elite ($1,199.99) and Elite LX ($1,249.99) are the premium tier with reinforced internals and the smoothest exterior finish. The LX ($999.99) is the entry tier and also paintable. The SE ($1,099.99) ships in matte black if you do not want to paint. All four use the same fiberglass-reinforced ABS shell core.
Can I paint a UnderCover one-piece to match my truck?
Yes. The UnderCover LUX and Elite LX both ship primered and ready for body-color paint. Take the cover to a body shop with your truck's paint code (or your truck if you can drop both off together), and a painter can match the cover to your factory color for a fully integrated look. SE and Elite ship with their factory finish (matte black or smooth black) and are not designed for repainting.
Are one-piece tonneau covers waterproof?
More water-resistant than folding or roll-up covers because there is only one seam to seal — the perimeter of the lid against the bed rails. UnderCover one-piece covers use full perimeter weather seals plus drainage. For rain, snow, and car washes, cargo stays dry. The single-piece construction is the strongest weather seal in the tonneau category.
How do you install an UnderCover one-piece?
Every UnderCover one-piece uses a no-drill clamp-on mounting system. Mounting rails clamp directly to the bed rails, the cover seats onto the rails with the gas struts attached. Most trucks take under an hour for one person with basic hand tools. No drilling, no cutting, no permanent modifications.
What is the difference between a one-piece and a hard folding cover?
Hard folding covers split the bed cover into two or three rigid panels that fold forward to the cab for partial bed access (you can drive with the cover folded). One-piece covers are a single rigid lid that hinges up from the front — cleaner factory look, stronger single-piece weather seal, paintable body-match option, but you cannot drive with it open. Folding is more flexible day-to-day; one-piece is the better aesthetic and security pick.
Will an UnderCover one-piece fit my truck?
One-piece covers are sized for each truck make, model, year, and bed length — they are not universal. The wrong size will not seal. Run your truck through the fitment tool or message us before you order. Fitment is verified before every order ships.