| Filter Finder | AC Filters | DC Filters Three Phase Filters | Home Automation Filters | Custom EMI Filters 2624 South Rousselle Street Santa Ana, CA 92707 USA 714-545-7003 Fax 714-545-4607 Contact Us ...Filter Concepts - EMI Filters Try our Filter Finder. This guide will help you determine the filter family that is most likely to meet your requirements. Although FCI's standard... product line is the most comprehensive in the industry, you may require a special EMI filter for your application. Made in USA New 200 Amp per Phase models now available in our 3B...