Two cabinet lines can look identical in a showroom and be built to completely different standards. Brand names tell you less than you'd hope — several big names sell multiple construction grades under one logo, and reviewers consistently find that how a cabinet is built matters more than whose sticker is on it. We set a few hundred pounds of stone on top of cabinets for a living, so we have strong opinions about what is underneath. Here's what to actually check, in the order it matters.

1. The box (carcass)

The box is the structure you're really buying; everything else can be replaced later. It is also what carries your countertop.

Plywood boxes are the upgrade standard: cross-laminated wood veneer holds screws firmly, tolerates steam and the occasional plumbing drip, and keeps most of its strength for decades. Almost every stock and semi-custom line offers plywood as a paid upgrade — take it at minimum for sink bases, where water exposure is a when, not an if. Ask our tear-out crew what a soaked sink base looks like; better yet, don't make them show you yours.
Particleboard (sold politely as "furniture board") is compressed wood chips and resin. It's flat, stable, and cheap, and in a dry location a melamine-faced particleboard box gives respectable service. Its two failure modes are well known: it swells and crumbles when soaked, and screws strip out of it under load — hinges and slides loosening years before a plywood box would.
Look for full plywood or thick panel backs (not hardboard tack-ons), I-beam or corner bracing, and shelves at least 3/4 in. thick so they don't sag under plates.

2. The drawers

Drawers take more open-close cycles than any other moving part in a kitchen — often the first thing to fail. Quality separates fast here:

Best: solid hardwood or Baltic-birch drawer boxes with 5/8 in. or thicker sides, dovetail joints at all four corners, and a plywood bottom captured in a groove (1/4 in. is standard; 3/8–1/2 in. is better on wide drawers). Dovetails are interlocking pins and tails glued together — the joint gets stronger under pulling force, exactly the force a drawer sees.
Acceptable: doweled or screwed-and-glued hardwood boxes.
Walk away: stapled particleboard or melamine drawers on economy side-mount rollers. These are the drawers that fall apart in year five.
Slides: full-extension undermount slides with soft-close (Blum, Hettich, Grass, and Salice are the common quality names) hide the hardware, let the drawer open fully, and use ball-bearing mechanisms that outlast rollers. Side-mount epoxy rollers cost less and work, but usually open only three-quarters of the way and feel it.

3. The doors

Solid hardwood (maple, oak, cherry, hickory) stile-and-rail doors are strong, repairable, and refinishable. On painted doors, know the trade-off that matters in our climate: wood moves with seasonal humidity, so hairline paint cracks at the joints are normal, not a defect.
MDF / HDF doors are the smart choice for painted kitchens: the fiberboard panel has no grain to telegraph and no joints to crack, so the paint film stays uniform. Density matters — HDF and high-grade MDF machine crisper profiles and hold hinges better than bargain board.
Thermofoil (vinyl film wrapped over fiberboard) is the budget option: easy to clean, uniform, and fine until the film peels near heat sources like ovens and toasters. It can't be meaningfully repaired, only replaced.

4. Hinges and hardware

Six-way adjustable concealed hinges with soft-close are the modern baseline — standard on most mid-tier lines and up. On framed cabinets, hinges bite into solid wood; on frameless, they bite into the panel, so panel quality is part of hinge quality.

The showroom checklist

Pull a drawer all the way out and look at the corners — dovetails or staples? Press on the back panel — solid or flexing hardboard? Ask three questions: What is the box made of, and what does the plywood upgrade cost? What are the drawer boxes and slides? What is the door made of under the finish? A dealer who answers in specifics is selling construction; one who pivots back to door colors is selling a photograph. "All-wood construction" in a brochure often means engineered wood counts as wood — make them say plywood, hardwood, MDF, or particleboard out loud. It is the same test we invite on our own quotes: specifics or it didn't happen.

Sources

Cabinet Reviews 2026: Ratings for the Top 157 Cabinet Brands — Main Line Kitchen Design
Dovetail Drawer Boxes — WalzCraft
Top 12 Kitchen Cabinet Brands in USA (2026 Update) — Tivoli Design Group
What's the Difference: Plywood vs. MDF vs. Particle Board? — Dean Cabinetry

How to Judge Cabinet Quality: Boxes, Doors, and Drawers