JUMBO Cedar Shakes are produced from clear old growth Red Cedar and are the finest longest lasting Cedar Shakes available. "Jumbo's" are at least 1.25"  and up to 1.50"  inches thick at the butt, perfectly tapered 24" long and range in width from 4" up to 15". JUMBO Cedar Shakes provide the longest lasting most durable and the most richly  textured roofs in the world.