Slatwall panels measure 48"H x 96"L x 3/4"W with the grooves running in the 8' direction, spaced 3" on-center. Panels are covered with a durable laminate finish on high quality MDF (medium density fiberboard), to form a hard, easy to clean, decorative finish. Thin line hooks are 3/16" thick and are primarily designed for small packaged goods or lightweight items that hang. 45 degree upturn at end.