What Are Kitchen Cabinets Made Of? A Cabinet Quality Guide
Two kitchen cabinets can look identical in a showroom and be built quite differently. The difference tends to show up a year or two later — in how the boxes hold up, whether the doors develop cracks at the joints, and how the finish wears. After years of supplying cabinets across Chicago, here is how we think about quality, and how the cabinets we sell are built.
Cabinet Boxes: Plywood vs. Particleboard
The box is the foundation of the cabinet. We choose to build only with plywood boxes and solid-wood face frames. We do not supply particleboard or MDF (sometimes called “press board”) boxes, because they tend to swell and break down if they get wet — not ideal for a cabinet under a sink.
On framed cabinets, a 1/2-inch plywood box is generally enough. The solid-wood face frame on the front carries much of the load and helps keep the cabinet square and durable, so adding thickness beyond that usually does little for strength on a framed cabinet.
On frameless (full-access) cabinets, thickness matters more. There is no face frame, so the box itself has to hold everything straight — that is where 3/4-inch plywood helps, keeping the cabinet square and easy to install. We also prefer real plywood shelves over particleboard shelves, which can sag over time.
Cabinet Doors: Where Quality Really Shows
Doors are where construction tends to vary the most. On flat slab doors, the core is often an engineered core fully wrapped and sealed in a durable finish on both faces. Because it is completely sealed, that core does not really affect quality — slab doors are stable and easy to clean.
On shaker and raised-panel doors, there are three main constructions you will come across in the Chicago market:
1. All-HDF doors
HDF (high-density fiberboard) doors are molded in one piece, so there are no joints to open up — they generally will not shrink or crack at the joints the way a framed wood door sometimes can. That can be an advantage in Chicago, where many homes see big seasonal humidity swings and may not have a humidifier or central A/C. Framed wood doors expand and contract with that humidity, and the paint can sometimes develop fine hairline cracks at the joints. You will occasionally see this on display doors in showrooms and big-box stores; it is often considered normal rather than a defect, and warranty coverage for it varies by manufacturer. The main trade-off with HDF is that it is softer than wood, so it can dent and scratch more easily, and it does not handle standing water as well. (No door is truly waterproof, but solid wood tends to shrug off a spill longer.) HDF doors also are not always dramatically cheaper than wood, so the savings can be smaller than people expect.
2. Solid-wood frame + HDF/MDF center panel (most common)
Here the door frame is solid hardwood (often maple) and the center panel is HDF or MDF. Many companies use an engineered center panel on purpose: if a solid-wood panel dries and shrinks inside the frame, it can sometimes expose a thin unpainted edge, and an HDF or MDF panel helps avoid that by staying dimensionally stable. This is the most common painted-door construction on the market.
3. Solid-wood frame + painted plywood center panel (top tier)
At the higher end, the plywood center panel is painted first and then set into the solid-wood frame. So even if the panel shifts slightly with the seasons, you are far less likely to see an unpainted edge — and plywood is generally tougher than HDF or MDF. This is the premium end of the ready-to-assemble market, and we carry a few lines built this way.
How We Build Ours
We supply cabinets with plywood boxes and solid-wood face frames rather than particleboard or MDF boxes. On doors, we carry a small number of all-HDF options, a wide range of doors with solid-wood frames and HDF center panels, and premium lines with solid-wood frames and painted plywood center panels. We usually point customers toward the wood-framed options, but the most important thing is that we will tell you exactly what a given cabinet is made of, so you can decide what is right for your home and budget. Browse our cabinet styles or get an instant quote.
Frequently Asked Questions
What are your cabinet boxes made of?
Plywood, with solid-wood face frames. We do not supply particleboard or MDF boxes.
Is 1/2-inch plywood thick enough for a cabinet box?
On framed cabinets, generally yes — the solid-wood face frame provides much of the structure, so a 1/2-inch plywood box is usually sufficient. Frameless cabinets typically use 3/4-inch plywood because there is no face frame to keep them square.
What are your cabinet doors made of?
We carry three types: a few all-HDF doors, doors with solid-wood frames and HDF center panels (the most common), and premium doors with solid-wood frames and painted plywood center panels.
Will my cabinet doors crack at the joints?
Painted solid-wood doors can sometimes develop fine hairline cracks at the joints with large humidity swings, which is common in Chicago homes without humidity control and is often considered normal rather than a defect. All-HDF doors generally will not crack at the joints, but they are softer. We are happy to help you choose based on your home and how it is conditioned.
Do you sell MDF or particleboard cabinets?
We do not supply particleboard or MDF boxes — our cabinets use plywood boxes with solid-wood frames.
Are HDF cabinets cheaper than solid wood?
Often only by a little. In our experience, one reason some sellers focus on all-HDF doors is to reduce warranty issues from paint cracking, but the material savings passed on to the customer tend to be modest.
Have a question about how a specific cabinet is built? Ask us — we are happy to walk you through it.
Ready to choose? Compare our Value, Standard, and Premium cabinet lines to match quality to your project.