HDF Board: High Density Fiberboard 1/4 in. commercial-grade pegboard is a cost-effective, decorative, premium solution when a sturdier pegboard is required. The ideal organization and storage solution for garage, shed, laundry, utility room, craft room, bedroom and closet areas. Unlike regular pegboards that are constructed of layers of glued cardboard, these commercial-grade pegboards will not dry-out, warp, crack or fray - even under severe fluctuations in temperature and humidity, completely maintaining the integrity of the finish. HDF is a wood product similar to MDF, but much denser, stronger and harder. It is recommended to be used with our DuraHook® 70000 series locking pegboard hooks and accessories.