Metal letters for signs are available in materials, sizes and styles. Small metal letters can be cut out from 1/2 inch and big metal letters can be made up to 48 inch. Metal letters can be used for home decor but they are mostly used by businesses for metal wall signs. Metal letters can be cut out of aluminum, brass or bronze material up to one inch thick. Cast metal letters are poured into a mold for added depth. All of our interior and exterior metal letters come with a lifetime guarantee.