Indoor Enclosed Recycled Rubber Tack board Message The tack board surface is manufactured using 90% post-industrial recycled rubber and the anodized Satin aluminum frame contains 75% post-industrial material. The shatter-resistant acrylic door panels contain up to 15% post-industrial recycled materials. The tack surface is self-healing and will hold up under the most demanding conditions. It is easy to maintain, colorfast and will resist stains and fading. Doors feature full-length hinges and flush mount locks and keys for added security. Included are concealed corner brackets for easy and secure mounting.