12"/30cm- 20'/610cm(1100)Silhouette Design Clocks with background for indoor and outdoor applications in sizes from 12 to 20'. Available without background see Style 1000. Clock consists of raised dial markings (typically aluminum) applied to a background. Clock movement typically accessed from the rear, front access available where rear access is not available. Shown with Type “ES hands and Type “AI dial markings. Available with any of our dial markings and hands, or ones of your own design. UL Listed