Aluminum Bracket Sign- "Self Serve No Smoking Stop Engine"Our Horizontal aluminum bracket sign "SELF SERVE NO SMOKING STOP ENGINE" is a double sided hanging sign printed on . 040 aluminum in Red and Black on a White background to provide a clear and legible message for your customers. For use with U BS 1 (sold separately) Sign states "SELF SERVE NO SMOKING STOP ENGINE" Message printed on both sides For use with U BS 1 bracket (sold separately) Color: Red and Black on White Material:. 040 Aluminum Size: 24"w