The Truck-Lite 35 Series 4" Rectangular Marker / Clearance Light is the perfect solution for narrow rail designs. This slim 3/4'' wide design makes it easy to mount horizontally. The optional gasket helps to improve the seal between the lamp and body, ensuring a secure fit. This Marker / Clearance Light is designed to be durable and long-lasting, making it a great choice for any vehicle. FleetPride is your First Click in Heavy Duty®.