Add a unique flourish to your décor with this square rough-edged slate blank from Make Market. Made with a special polyester coating for use with sublimation inks, embellish this piece with stylish designs perfect for a handcrafted gift or use in your own space. Details: Unfinished white with rough gray edges 6" x 6" (15.24" x 15.24") blank size7.25mm to 8.25mm blank thickness Includes stand for display Single side sublimation only Slate with polyester coating and plastic Sublimation Instructions:Pre-heat to 356°F (180°C) and press for 360 seconds. Do not exceed 400°F (204°C).Always reference manufacturer's instructions for recommended use, time and temperatures for each heating machine, as they could vary. Surface will be hot. Use protection when handling the finished product.