Grote Industries’ 4-inch round light combines stop, tail, turn and back-up functionality into a single combination light.

The LED light fits most standard 4-inch round mounting hardware, according to Grote, and its thin, sealed design provides a more modern appearance. The 4-in-1 functionality allows for fewer lamps, fewer connections and fewer mounting holes.

We have solved the problem of combining multiple lamp functions in the smallest legal size, and making the lamp backwards compatible to any standard 4-inch round or 6-inch oval STT lamp,” said John Grote, vice president of sales and marketing.

In addition to the 4-inch there is also a 6-inch Oval light in the 4-in-1 lighting family.