12"/30cm- 20'/610cm(1000)Silhouette Design Clocks for indoor and outdoor applications in sizes from 12 to 20'. Available with background see Style 1100. Clock consists of raised dial markings (typically aluminum) applied to the wall surface. Clock movement typically accessed from the rear, front access available where rear access is not available. Shown with Type “CS hands and Type “L dial markings. Available with any of our dial markings and hands, or ones of your own design. UL Listed