C.R. LAURENCE TPLX18 CRL 18" Diameter Indoor Clear Acrylic Convex Mirror. CRL Acrylic Convex Mirrors are the perfect solution for indoor parking lot safety and surveillance, as well as elevator use where low ceiling height is a concern. They are economically priced and meet all OSHA guidelines for safety as required in the workplace, schools, and public facilities. Mirror is formed from 1/8" (3 mm) acrylic material, which is thicker than most competitive types. They are completely free from distortion and 20% brighter than glass. Each mirror is individually packed, equipped with a swivel assembly that"s adjustable to any position or angle, and comes with an adjustable mounting bracket and installation instructions. Cleaning Instruction: Clean Acrylic Mirrors using mild soap and clean, soft cloth..