MILLER ENGINEERINGS animated billboards are the newest addition to their line of animated neon signs. These new signs incorporate many new design features such as improved connectors, no painting required, longer life, and stiffer laminations. Ready-to-run ...just add 3 "AAA' batteries (not included.) N/HO Scale Artic Refrigeration Billboard. Thermometer moves down as icicles grow from letters. Dimensions: 2¾" Wide x 1¾" Tall.