The Grote 4" all-in-one stop, tail, turn, back-up combination light fits most standard 4" round mounting hardware, and its thin, totally sealed, patented design provides a more modern appearance. The 4-in-1 functionality allows for fewer lamps, fewer connections, and fewer mounting holes. The 4" Round joins Grote’s 6" Oval light in the 4-in-1 lighting family, all of which are designed with less cost, inventory, maintenance and downtime in mind.