Plywood Grades for Cabinets: What to Buy

Short answer: what to buy

For most cabinets, look for hardwood plywood sold as “cabinet grade” or “furniture grade,” with a good face veneer on the side that will be seen and a smooth, sound back. Construction sheathing such as CDX is generally not a good fit, because its surface is rough, it often has voids, and it is made for structure rather than appearance. Exact grades and names vary by region and supplier, so treat the guidance here as a starting point and ask the seller what a given label means.

How plywood grading works

Plywood is graded in more than one system, and mixing them up is the most common source of confusion.

Construction and industrial plywood (sheathing, subfloor, exterior panels) is typically graded with letters, such as A, B, C and D, for the two faces. A third letter or marking often notes the glue type or exposure rating.
Hardwood and decorative plywood (the kind used for cabinets and furniture) is graded for the appearance of its face veneer and back veneer, often with its own letters and numbers, and sometimes with terms such as “good two sides.”

Because the two systems overlap in letters but not in meaning, always confirm which one a label is using. Suppliers sometimes use their own grade names too.

Reading the letter grades

In the common letter scale, the first letter usually describes the better face and the second describes the back.

A: smooth, with little or no visible defects, and any repairs are minor.
B: a solid surface that may have small, tidy patches or minor color variation.
C: may have knots, splits or unpatched openings of limited size.
D: the roughest face, with larger knots and openings allowed.

A sheet labeled A/B has an A face and a B back. For cabinet work, the faces matter most on the parts that will be seen: door fronts, exposed sides and open shelves. Hidden parts can use a lesser face.

ACX, BCX and CDX: why they are not cabinet grade

These are construction plywood labels (see also our guide to CDX plywood types). The “X” generally refers to exterior-rated glue, not outdoor durability of the wood itself.

ACX: an A face, a C back and exterior glue. It has a smoother face than other construction grades, but the inner plies can still contain voids, and the core is usually softwood.
BCX: a B face, a C back, exterior glue. Often used for sheathing and utility projects.
CDX: C and D faces. It is a rough, utilitarian panel that is generally not suited to visible cabinet surfaces and can warp or telegraph surface flaws through paint.

These panels can be fine for shop cabinets, garage storage or hidden structure, where appearance is secondary. For kitchens and furniture, most builders choose hardwood plywood instead.

Hardwood plywood grades for cabinets

Hardwood plywood (see also furniture plywood types) is commonly graded for each face. You may see markings that combine a letter or number for the face and the back. The naming differs by manufacturer and standard, so the following are examples rather than a universal key:

Premium or “A” faces: carefully matched veneer with few visible defects, suited to clear finishes and stain.
Good faces: a few small, sound characteristics, often fine for paint or for sides that are less exposed.
Sound or utility backs: acceptable for interior surfaces and backs, with more patching and variation.
Good two sides (G2S): both faces are of good appearance, useful when the inside and outside of a box will both be visible, such as open shelving or glass-door cabinets.

When in doubt, ask the supplier what the face and back grades are, and ask to see a sheet.

The four common types of plywood

People often mean slightly different things when they ask about “types.” A common way to group plywood is:

Softwood plywood: made from species such as pine or fir, widely used in construction.
Hardwood plywood: made with hardwood face veneers such as birch, maple or oak, common in cabinets and furniture.
Tropical plywood: produced from tropical hardwoods, sometimes used where a stable, dense panel is wanted.
Decorative or aircraft-style plywood: thin, high-quality panels with consistent plies, used for specialty work.

Other sources split plywood by use (interior, exterior, marine). The categories are not standardized, so check product details rather than relying on a label.

Matching grade to the part of the cabinet

A practical approach is to spend on appearance only where it shows.

Cabinet sides and bottoms: a good-quality face on the visible side. A lesser grade on the hidden side is usually fine.
Shelves: they need strong, flat panels; visible edges will typically be covered with edge banding or solid wood trim.
Backs: thinner panels with a modest grade are common, as long as they are flat.
Doors and drawer fronts: often made from solid wood or veneered panels. If using plywood, pick sheets with a consistent, well-matched face.
Drawer boxes: many builders use a stable plywood with tight inner plies, and some prefer Baltic birch (see below).

Face veneer species and finish

The species on the face affects how the cabinet will look and take a finish.

Birch is pale and fairly even, popular for paint and light stain, though it can blotch when stained. See our guide to birch cabinets for more on that.
Maple is smooth and light, often chosen for clear finishes or paint.
Oak has a pronounced grain that shows through stain and, to some extent, paint.

If you plan to paint, a smoother, closed-grain face usually gives a better result. If you plan to stain, ask for matched veneers and test the finish on an offcut.

Core types and thickness

The core is the inner layers of the panel.

Veneer core is the traditional layered construction, with stable cross-grain plies.
MDF core gives a very flat, smooth panel that takes paint well, but it is heavier and can be more sensitive to moisture at exposed edges.
Particleboard core is often found in lower-cost panels.
Multi-ply or “void-free” cores have more layers and fewer gaps, which helps with clean edges and screw holding.

Common thicknesses for cabinet parts range from thin backs to boxes and shelves of around three quarters of an inch (or metric equivalent), but check the real thickness of the sheet, because “nominal” sizes are often a little different from actual measurements.

Baltic birch

Baltic birch is a plywood with many thin, uniform birch plies and a clean edge. It is popular for drawer boxes, jigs and exposed-edge designs. Sheet sizes are often different from standard North American 4 x 8 panels, so account for this when planning cuts. Quality varies by supplier, so inspect the sheet.

How to inspect a sheet before buying

If you can, look at the sheet in person.

Flatness: sight along the sheet or lay it on a flat surface. Large bows or twists make cabinet assembly harder.
Edges: check for gaps, voids or crumbled layers.
Face veneer: look for sanding-through, tears, patches, or sharp color differences.
Damage: corners and edges can be damaged in transport and storage.
Moisture: stains or swelling suggest the panel has been wet.

Handling full sheets is awkward and heavy. Get help moving them, wear gloves for splinters, and secure loads when transporting.

Where to buy cabinet grade plywood

Many home centers carry some sanded or hardwood plywood, though selection can be limited. Lumberyards and specialty hardwood suppliers often have a wider range and can tell you about the grading of their stock. Availability varies, so call ahead and ask what is in stock and how it is labeled.

Plywood or MDF

MDF is smooth, flat and takes paint well, but it is heavy and tends to swell if water reaches the core. Plywood generally holds screws better and tolerates moisture exposure somewhat better, though neither is waterproof. For a comparison of other sheet goods, see our guides on particle board and on laminate and melamine.

Working safely with plywood

Dust: cutting and sanding plywood creates fine dust. Use dust collection, a well-fitted respirator or dust mask rated for fine particles, and eye protection.
Glues and binders: panels can contain resins that release small amounts of vapors, especially when new. Ventilate the work area, and ask suppliers about low-emission options if you are concerned.
Power tools: support sheets on a stable surface when cutting, use sharp blades, keep guards in place, and never freehand a large sheet on a table saw. A track saw or a circular saw with a guide is a safer way to break down full sheets; see power tools for beginners for tool-handling basics.
Finishes: many stains, solvents and sealers are flammable and give off fumes. Work in good ventilation, keep ignition sources away, and dispose of oily rags following the product’s instructions.

Frequently asked questions

What kind of plywood should I use for cabinets?

Hardwood plywood with a face veneer that suits your finish, such as birch or maple for paint or light stain, is a common choice. Check the face and back grades.

Does Home Depot sell cabinet grade plywood?

Many large home centers sell sanded or hardwood plywood, but the selection and grading information vary by location and over time. Check with your local store and compare with a lumberyard.

What are the differences between ACX, BCX and CDX plywood?

They are construction grades: ACX has a smoother A face, BCX a B face, and CDX rougher C and D faces. All typically use exterior-type glue. They are generally for structure rather than furniture.

Is plywood better than MDF for cabinets?

It depends on the use. Plywood is stronger at holding screws and generally handles moisture better, while MDF is smoother for paint. Many builders use each where it performs best.