Accuform, MFXG545VS, 18" x 4" Adhesive Vinyl Safety Sign: "Fire Extinguisher" & Down Arrow Always make sure personnel knows where the fire extinguisher is in case of an emergency situation. Adhesive Vinyl (VS) Self-stick custom signs. Adhesive Vinyl is a moisture-resistant custom sign material that adheres to almost any flat surface. Adhesive vinyl signs will work for short term outdoor applications, and in moderate temperatures.