PYLE-PRO PH810 - Screw-On Type Radiation Horn Material: ABS Resin Nominal Coverage Angle (HxV)-6 dB: 90'ba x 40'ba Cut Off Frequency: 1000 Hz Throat Diameter: 25.40 mm (1'') Mounting Type: Copper Screw Insert 1 3/8'' - 18 UNEF Material: ABS resin Nominal coverage angle (HxV)-6dB, 90ba x 40ba Cut off frequency: 1000Hz Throat diameter: 26mm Dimensions: 9 5/8" H x 7 7/8" W x 6' D