1A to 20A DC EMI Filter, up to 100V or 200V Permanent Input with 1500VDC Isolation and Metal Case Design. - China DC Power Line Filter, DC-DC Power Filter | Made-in-China.com
Modular AC line EMI filters explained
DLHiFi 2A 4A 10A 20A DC LC Filter EMI Filter EMC FCC high frequency power Filtering for 12V 24V CAR HiFi Power Amplifier - AliExpress
DLHiFi 2A 4A 10A 20A DC LC Filter EMI Filter EMC FCC high frequency power Filtering for 12V 24V CAR HiFi Power Amplifier - AliExpress