JT3930 High Intensity Prismatic Grade Series is a non-metalized micro-prismatic lens reflective sheeting meets and exceeds the requirements of ASTM D4956 Type IV and EN12899 RA2. With the PMMA front film and its retro-reflective system of sealed cells of air backed micro-prisms and using total internal reflection, JT3930 series is highly reflective, durable and self-adhesive sheeting with great weather resistance.This product is designed to use on the permanent traffic signs, highway traffic signs, crossing signs which require a long-term durability.