Ideal for indoor or outdoor Industrial applicationsHorn is energy efficient with hermetically sealed diaphragm assembly which operates on a wide range of pressure without tuning or adjustment.Horn construction: High strength aluminum casting, stainless steel diaphragm discs and fasteners.Operates with electric solenoid or other actuating valves of 1/2" pipe size or greater. Product Specifications LENGTH INCHES16-3/5 WIDTH INCHES6 HEIGHT INCHES9 CONSTRUCTIONCast Aluminum and Stainless Steel MANUFACTURERS PART NUMBERK-1 VOLTAGE--- WEIGHT LBS.7 BRANDKahlenberg DECIBEL139 dB(A) @ 1M FREQUENCY311 Hz PRESSURE REQUIRED30-150 p.s.i. PRODUCT GROUPIndustrial Horn AVERAGE AIR CONSUMPTION24 SCFM AIR CONNECTION1/2 FNPT