Red Double Bulls-Eye Clearance/Side Marker Light - Peterson Manufacturings Double Bulls-Eye Clearance and Side Marker Light is a popular 2-bulb lamp that functions as either a clearance or a side marker light, and may also be used as a combination clearance / side marker light when properly mounted. This light features an acrylic lens that snaps onto the base, and surface mounts on 3 inch centers. It grounds through the mounting hardware with a single wire for electrical connection. It also comes with two 15.000-hour long life bulbs. Red lens in color. Dimensions: 4 inch L x 2 inch W x 1-1/8 inch D. 1 per package.