Wolo Model  820 Giant Chrome Metal Roof Mount Single Trumpet Low Tone Air Horn - Requires An On Board Air System
The Giant produces a powerful sound to be heard. It is made with two sturdy roof supports that eliminate trumpet vibrations on the roughest roads. A front deflector cover provides protection against rain, road dirt, snow, bugs, etc. from entering the horn trumpet, protecting the sound and your investment. The air feeder hose connection is made through the base and is not externally visible. The Giant's beautiful chrome appearance will look great on any truck, and its superior performance will provide an alerting sound for a greater distance. Requires an on board air system. All needed mounting hardware is included. Spanish instructions included.SPECIFICATIONSSize Model 820: L 28 in. x W 8 1/4 in. x H 4 1/2 in.Size Model 825: L 24 1/4 in. x W 8 1/4 in. x H 4 1/2 in.Sound output with 90/100 psi: 130 dbAir inlet fitting: Brass