4” x 4” Raised Pavement Marker (RPM), Type 2, Reflective, Uncoated Lens. RPM Type 2YY. RPM Type 2W. RPM Type 2Y. RPM Type 2WR. RPM Type 2YR. 4” x 4” Raised Pavement Marker (RPM), Type 2, Reflective, Abrasion Resistant Lens. Category C. Category D. 3.2” x 4.6” Raised Pavement Marker (RPM), Type 2, Reflective, Abrasion Resistant Lens