Slate Large Square, 7.8" x 7.8" x 3/8", matte finish with black plastic display feet. These are excellent heirloom items, your clients will love these plaques.Smooth, machined 3/8" slate, each with unique fractured edges. These plaques make exciting photo presentations. (2) Black plastic "feet" are included. Slate can vary in size by up to -0.4".