NEW Workman NF20 automotive electrical noise filter. Designed for use with automotive communication and entertainment systems including CB radio, ham radio, car stereo, and others. 12AWG wiring. Includes an high inductance iron core coil and capacitor L-C filter to reduce interference caused by automotive alternator and ignition impulse noise. Install in series between the affected communication or entertainment equipment and the automotive 9-12V power source. Measures 3in (3-5/8 w/ flange) (L) x 2-3/8in (W) x 1-3/4in (H). Filter rated at 10 Amp maximum at 12VDC. 

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