494800CSA Clear PETG Face Shield - MCR Safety's headgear and face shields offer superior protection from liquid splashes and flying debris that would otherwise be damaging to the face. An assortment of brackets and face shield sizes and materials make it a good bet that you can find an option just right for you. The 494800CSA is a flat PETG replacement face shield for our Double Matrix headgear. It measures 7 x 16.75 inches and is .042 in thickness.