40 Inch Dual Row LED Light Bar features approximately 19,200 lumens. Combination of 8 degree narrow spot beam pattern for focusing on long range distances AND 120 degree wide flood beam pattern for close but wide range illumination immediately surrounding the vehicle. The aluminum housing is waterproof, dustproof and rattle proof. Built for Off-Road performance in harsh outdoor conditions. Expected LED life of 30,000 hours. Mounts to the front of a Front Runner Roof Rack via the T-slots of the front combined slat profile OR under the Rack using included mounting bracket solutions. Mounting brackets are made of Aluminium and 3CR12 stainless steel and sealed with the same durable, weather resistant black powder coating as the Front Runner Roof Rack. The robust light shield protects the 40 inch LED Light Bar from small rocks and can rotate 100 degrees not braking the beam pattern when the light is in use. The light shield can additionally control light fall and prevent excessive glare on the vehicles hood/bonnet. Optional Wiring Harness available (Single LED Wiring Harness with ATP Plug - by Front Runner). Supplied with a Lightbar Isolator Kit - by Front Runner, that fits into the heat-sink fins on the back of the 40''/1016mm LED Flood/Spot Combo, eliminating harmonic vibrations. Includes all installation hardware and fitting instructions. PLEASE NOTE: A minimum of 100mm (3.94 inches) clearance is needed between the bottom of the Front Runner Rack and the vehicle's roof in order to fit this product using the under rack brackets.