Brand New Viking Horns Loud 3 Trumpet Train Air Horn kit. This Horn system produces a High-Powered Sound of 170 Decibels. Trumpets are chrome plated metal. Will replace your original horn or can be installed as an auxiliary horn. Comes with a 5-gallon air tank, two (2) 12-volt 200 PSI heavy duty maintenance free 100% duty cycle air compressors, 1/2" Diameter Air Hose (for increased air flow that produces a louder sound), 1/2" Heavy Duty Electric Air Valve Solenoid. Includes Mounting Hardware, connecting brass fittings, Air gauge, 170/200 PSI Air Pressure Switch, Teflon tape sealer, installation instructions, Electric Wires, and Free-Horn-Button. Ideal for vehicles such as Trucks, RV's, SUV's, Pick-Ups, Boats, and many other applications. Overall horn dimensions: L 16-1/4" x W 15" x H 11". Air Compressor dimensions: 10-3/4" L x 4" W x 6-3/4" H. Air tan dimensions: 21" L, 10-1/2" H, including mounting bracket.