11/16″ x 3-1/2″ x 16′ Primed MDF S4S Board – 4 Square Edges – 1566875

Squares are used in the framing of shelves and cabinets, or are used to build up other profiles. Its uses are mostly utilitarian.

Finished boards come in either S4S (Surfaced 4 Sides) or S3S (Surfaced 3 Sides) with square edges.