Quartet® Economy Cork Bulletin Board, Aluminum Frame, 36" x 48". Bulletin boards with 100% natural self-healing cork. Aluminum frames are made with heavy gauge, etched and satin finish anodized aluminum with four precision mitered corners. These boards are ideal for low-frquency or low-traffice areas. Eyelet hangers are included but it is recommended to screw board directly to the wall through the aluminum frame for better stability.