DOBPLAST reflector 763403 red reflector 76 mm × 34 mm with holes The DOBPLAST 763403 reflector is a passive reflective safety and contour marking element in a rectangular design with dimensions of 76 mm x 34 mm for fixed mounting via holes on trailers, cars, vans and commercial vehicles. The red reflective surface provides improved lateral visibility in road traffic, while the E20 IA homologation allows for use in accordance with the standards.