cork board, fabric cover, interlayer is soft cork wood, backboard is galvanized board, insurance: five years corkboard: frame: sand white alumina frame..23(h) ×26(w) ×1.5(thk)mmSurface: yew surface or fabric cover, 1mm thkInterlayer: cork board +EPS, thickness: 20mmBackboard: Galvanized board, 0.2mm thk Accessories: stainless steel hooks Fabric cover cork board GRD series