PRO1143 12 TERMINAL SPEAKER WALL PLATE Specification: Binding post: gold plating Au24K top coat 3µ", Ø4mm I.D. Audio frequency response: ±0.1dB, from 20 to 20KHz Material of wall plate: Acrylonitrile Butadiene Styrene Related Products PRO1144 16 TERMINAL SPEAKER WALL PLATE