"Oval design allows for installation in narrower channels. Hermetically sealed lens-to-base seals out corrosion contributing salt and rain. Structurally immune to extreme heat and cold. 6-1/2" x 2-1/4" x 2-3/8" depth. Cut-out: 6-3/4" x 2-1/2". Light assembly consists of: red stop/tail/turn light w/grommet w/standard pigtail."