Every piece meets the highest grading standards for strength and appearance. Sanded and smooth BC project panels are perfect for interior and exterior applications from yard art to wainscoting. do-it-yourself projects. cabinets. shelving and furniture to porch ceilings. soffits and flooring underlayment. These panels are ready to be painted. This plywood has great strength and stiffness. These boards are easy to handle and install. They also have excellent nail and adhesive holding ability.