Oval design allows for installation in narrow channels. Hermetically sealed lens-to-base seals out corrosion contributing salt and rain. Structurally immune to extreme heat and cold. Lenses meet FMVSS/CMVSS 108 requirements. Rubber grommet and three wire pigtail can be purchased separately or as a kit. Mounting bracket of 11 ga. steel available separately. Size is 6-1/2" x 2-1/4" x 2-3/8" depth, Cutout: 6-3/4” x 2-1/2