Premium quality MDF (Medium Density Fiberboard) cut to 12x19 inches, 12x12 inches, or 18x24 inches, 1/8th or ¼ inch / 3mm or 6mm thick. Safe and ready for home laser cutting and perfect for the Glowforge, Mira, Thunder, Trotec, Epilog and other home lasers.,Premium quality MDF (Medium Density Fiberboard) cut to 12x19 inches, 12x12 inches, or 18x24 inches