CBS Dichroic Coated Glass sheets are offered in 19" inch diameter rounds. Most 19” glass sheets come in full circles, with the exception to a few specialty 3 mm glasses by Bullseye & Uroboros, which may have two flat sides approximately 16"-17" inches apart. 19" inch diameter sheets with flat sides are approximately 262 square inches. Note: 19” glass sheets with flat sides will feature an asterisk (*) with additional information. "Full" 19" diameter sheets are approximately 283 square inches. CBS is able to produce glass sheets in numerous combinations of color, textures, patterns and COE. We encourage you to give us a call with your specific combination and we will be happy to place your order with CBS.