Natural cork is always a winning choice. Classic unfinished cork adds an organic element to any environment. Natural cork tackboards are suitable for any classroom, library, or other space, dampening sound and adding texture as well as display space. Natural cork is an environmentally responsible and naturally renewable resource. Cork is harvested from a cork tree, stripped with careful cuts that do not harm the inner core of the tree. The cork bark regrows, and this process allows a useful life of more than 150 years for each tree. Choose from three substrate options to fit your requirements or budget: Valu-Tak: Our most economical and best value surface, Valu-Tak features 1/16" thick cork layer bonded to 7/16" lightweight and tackable substrate material. Natural Add-Cork: Step up to our select Add-Cork surface, which features a 1/8" thick cork layer bonded to 3/8" thick durable substrate material. Natural Cork-Plate: Premium Cork-Plate surface is our top of the line option, featuring a full 1/4" thick cork layer bonded to 1/4" thick rigid and moisture-resistant substrate material. Anodized aluminum trim has a 7/8" profile with hairline mitered corners. Black aluminum trim available at an upcharge. Ten year limited warranty. SCS Indoor Advantage Gold Certified.