The M23015R-DV is a 2″ x 4″ surface mount red clearance marker lamp. It°s a completely sealed one-piece ″Double Bullseye″ design and features a wide 180-degree horizontal beam for maximum visibility. It complies with P2 P3 and PC2 DOT requirements. This dual voltage light is compatible with either 12VDC or 24VDC systems (for 12V only see M23015R). It has a 2 hole mount that requires 2 ea 3/16″ diameter holes, 3″ center to center. This light features a polycarbonate lens & housing and is backed by a 5-year warranty.