Americor makes several EMI/RFI filters including LC filters and those that can be made to medical grade specifications and come in single (up to 30 Amp.) and three phase models (up to 250 Amp.), as well as power entry modules.

Corcom Products makes EMI/RFI filters including LC filters, Power Line filters, ISM filters, Signal Line filters, Power Entry modules, DC filters and facility filters. Their power entry modules have a current rating of 1 to 15 Amps, while their DC filters have a current rating of 1 to 125 Amps. Corcom filters can be used for microwave filtering as well as medical and military applications.

LCR Electronics designs and manufactures EMI/RFI filters such as power entry filters, power line filters, signal line filters,  and facility filters. Their power entry filters have a max rated voltage of 250VAC with a rated current of 1-20A (filters) and 1-10A (modules) and an operating frequency of 50 or 60Hz. Applications include industrial three phase controllers, medical grade filters, microwave filtering, military spec filters, and appliances.

Qualtek makes EMI filters including power entry filters with Amp ratings of 1, 2, 3, 4, 6, 10, or 20V, IEC connector filters, chassis mount filters, and multi-function module filters as well as medical grade filters with Amp ratings of 3, 6, or 10V.

Schurter makes several noise filters including power entry modules, and single and three phase power line filters. Their single phase line filters have a current rating of 0.5A - 36A with voltage of 125VAC or ±80 VDC while their three phase filters have a current rating from 6 - 1100A and run on 440, 480, or 520VAC. In addition, Schurter makes ISM filters and medical grade filters.