Aisle Marking tape is made from a durable vinyl film with a rubber adhesive system that will adhere to most clean and dry surfaces. Vinyl offers a matte smooth conformable tape that is great for marking hazards on floors, walls and equipment. Many colors available. Legend: Red: Fire, Danger, Stop. Orange: Hazardous/Biohazard. Yellow, Yellow/Black: Caution. Green: Safety. Blue: Warning. Black/White: Boundaries. Sold as 16 rolls per case, Safety Yellow, 3″ x 108 Feet/Roll.