Brand New, Hi-Powered 4 Trumpet Train Air Horn And Compressor/Tank kit. This Horn system produces a loud Sound of 162 decibels. Trumpets are chrome plated metal. Will replace your original horn, or can be installed as an auxiliary horn. Comes with a 3 gallon air tank, and 12 volt 150 PSI heavy duty maintenance free compressor. Includes Mounting Hardware, Brass Fittings, Air Hose, Electric Air Valve, 0-to-240 PSI Air gauge, 120/150 PSI Pressure Switch, installation instructions. Ideal for vehicles such as Truck, RV, SUV, Boat, Pick-Up, and many more applications.Horn dimensions: 15-1/2" L x 11-1/2" W x 12-1/2" H. Air compressor dimensions: 9-1/2" L x 4" W x 6-3/4" H. Air tank dimensions: 21" L, 7-1/2" H, 6-1/2" in diameter.