Markers are made of durable vinyl that is ideal for indoor and outdoor environments and are supplied on a coated backing material that makes handling and installation easy Marker ends should be banded with brady directional flow arrow tape to indicate pipe content flow direction Brady B-946 is printed with weather resistant inks and is particularly suited for use in outdoor applications where weatherability is a key consideration Markers meet the requirements of the ASME (ANSI) A13.1 standard for the identification of piping system contents when used with directional flow arrow tape Average outdoor durability is 8-10 years (average expected outdoor life of product will depend on user definition of failure, climate, mounting techniques and material color)