These lights have a unique lens shape and patented Linear-LED’s designedreflector assembly, M Series lightheads are completely illuminated forunmatched high intensity warning and low current consumption. These are singlecolor LED lightheads offered with either a colored or clear lens. SAE Class 1 Certified Available with clear lenses Solid color models have 159 Scan-Lock flash patterns color Split Color Models have 64 Scan-Lock flash patterns Hard-coated lenses minimize environmental damage from sand, sun, salt, and road chemicals Surface mounts via two screws for easy installation A variety of mounting brackets and optional chrome or black flanges are available (black-part# M6FB, chrome-part# M6FC) Multiple Scan-lock flash patterns California Title XIII Compliant: Meets KKK-1822F, NFPA 1901, NFPA 1917, SAE, and EC65 specifications Dimensions w/ Bezel: 6-3/4L x 4-5/16″H x 1-3/8″D Five-year warranty