CALCULUS Street Sign teacher professor mathematics degree college | Indoor/Outdoor | &nbsp;18" Wide Sign Size: 4" X 18" Perfect Gift  Good for decorating a work space or hanging in a den, this novelty sign makes a great gift for anyone Quick & Easy Mount  Comes with pre-cut mounting holes for hanging Indoor/Outdoor Use  Printed with ultra durable inks for a scratch resistant finish that will last for years Proudly Made In The USA  Buy with confidence from an American owned and operated company! SignMission Items are produced in our state-of-the-art facility in West Palm Beach, Florida