Plywood vs. MDF vs. Particleboard
The material field tells you what a cabinet's box and doors are actually built from, and it matters more for how long a cabinet lasts than door style or color ever will.
How the materials compare
- Plywood: very durable, good moisture resistance, higher price
- MDF: takes paint evenly, poor moisture resistance unless sealed, mid price
- Solid wood: excellent durability, can expand/contract with humidity, highest price
- Particleboard: weakest option, poor moisture resistance, lowest price
Not all plywood is the same
3-ply plywood is thinner and more prone to flexing, so it shows up mostly in cabinet backs and lower-cost lines. 5-ply and 7-ply plywood uses thinner, more numerous layers glued in alternating grain directions, making the panel stiffer and more resistant to warping. A listing that just says "plywood construction" without a ply count is usually using 3-ply for the parts that don't show.
Common material combinations
A lot of mid-range cabinets use plywood for the structural box and MDF for the doors and drawer fronts — MDF takes paint more evenly, while plywood gives the box better screw-holding strength. A second common pairing is a solid wood face frame with a plywood box behind it, common on framed cabinets. Neither combination is a downgrade — both are deliberate choices about where the durability actually needs to be.
When a listing just says "wood" or "engineered wood"
Vague material listings are often particleboard. Check the listing photos for a visible box interior (particleboard has a distinctive speckled edge), compare shipping weight against similar cabinets (particleboard is heavier per cubic foot), and check the warranty length, since retailers rarely back particleboard with a long structural warranty.
Where material matters most
Moisture resistance matters most under the sink and near the dishwasher, where particleboard or unsealed MDF is most likely to swell over time. You can browse BeeBoard's catalog and check the material field listed on each cabinet.
Frequently asked questions
Is MDF bad for kitchen cabinets?
Not inherently — it's a poor choice for a box near water, but a fine and common choice for
doors and drawer fronts, especially painted ones.
Do all RTA cabinets use particleboard?
No. RTA describes assembly, not material — plenty of RTA lines use plywood boxes, and plenty
of pre-assembled cabinets use particleboard.
How can I tell what material a cabinet is before I order?
Check the material field first. If it's vague, check the photos, compare shipping weight,
and check the warranty length as a rough proxy for durability confidence.