Enclosed Aluminum Directory Boards are made of custom extruded parts engineered to provide accurate, durable and handsome cabinets. All corners are neatly mitered and assembled with Heavy duty reinforcements and fasteners. The black felt covered grooved rear panel designed to accommodate changeable letters with tabs spaced on 1/4'' centers. Finish Bronze Satin Anodized Size 36''Hx30''W 1 Door