Particleboard

An engineered panel made from wood chips, shavings, and sawdust bonded with adhesive and pressed into sheets. Particleboard is the most affordable panel material used in cabinetry, commonly found in shelving, cabinet bottoms, and economy-grade boxes. It is heavier than plywood for its strength rating and swells when exposed to moisture, so it is best used in dry interior applications.

Specifying this for a job? Captivating Pro members buy at 20–40% off retail and get cut sheets before rough-in.