The Truck-Lite Company Inc Sealed Mid- Trailer Side Turn with Flange is the perfect choice for your trailer lighting needs. This durable and safe lighting solution provides visibility and is designed with a narrow width to facilitate horizontal mounting. It is constructed with high impact polycarbonate for superior strength and durability. The dual filament baseless bulb ensures maximum brightness and visibility. This turn signal is designed to withstand the toughest conditions and is perfect for any trailer. FleetPride is your First Click in Heavy Duty®.