The Pyle Screw-On Type Constant Radiation Horn - Material: ABS Resin - Nominal Coverage Angle (HxV)-6 dB: 90¦'ba x 40¦'ba - Cut Off Frequency: 800 Hz - Throat Diameter: 25.40 mm (1'') - Mounting Type: Copper Screw Insert 1 3/8'' - 18 UNEF - Impedance: 4/8 Ohm - Dimensions: 6 1/4''H x 9 7/16''W x 3 9/16''D.
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