Durable, UV and graffiti resistant protective overlay film, with a clear pressure-sensitive adhesive. It is applied as a protective overlay to signs made from 3M Reflective Sheetings.Keep your digitally printed signs looking new and protect them from costly graffiti damage. 3M Protective Overlay Film Series 1160i is a durable, UV and graffiti resistant protective overlay film, with a clear pressure-sensitive adhesive. It is applied as a protective overlay to signs made from 3M Reflective Sheetings. Rest easy knowing that traffic signs vandalized by most common graffiti can be cleaned and restored saving on replacement costs. You also get UV protection to help resist degradation of the ink and reflective sheeting.