Primecoat building board is an inexpensive wood fiber panel with factory applied white paint that permits finishing without the need of a primer. Primecoat board is made from organic raw materials and is an environmentally friendly product. It can be applied on walls and ceilings in residential, commercial, and industrial applications. Primecoat board should be protected from the elements. Do not store directly on the ground. Class C. Size: 4' x 8' x 7/16". Must order in multiples of 6.