This high quality, resilient air horn is perfect for engine room, fire alarm and general industrial signaling applicationsIdeal for use in hazardous and corrosive environmentsEfficient design with low air consumptionDurable, solid cast bronze bell with stainless steel diaphragm discOperates with electric solenoid or other actuating valves of 1/4" pipe size or greater.Product Specifications LENGTH INCHES4-7/10 WIDTH INCHES4 HEIGHT INCHES4-1/2 CONSTRUCTIONBronze and Stainless Steel MANUFACTURERS PART NUMBERCA VOLTAGE--- WEIGHT LBS.3 BRANDKahlenberg DECIBELS132 dB(A) @ 1M DECIBEL132 dB(A) @ 1M FREQUENCY745 Hz PRESSURE REQUIRED50-150 p.s.i. PRODUCT GROUPIndustrial Horn AVERAGE AIR CONSUMPTION14 SCFM AIR CONNECTION3/8 FNPT