Amazon.com: EMI Power Supply Filtering Board, Two Stage Low Pass Filter, EMI High Frequency Filter, Inhibit Interference, Noise Filtering, for Building Automation with Elevator Lift Equipment (4A) : Industrial & Scientific
25A Power EMI Filter Board High Frequency Two-stage Low-pass Filter 10kHz~30MHz | eBay
Power Filter EMI High Frequency Two-Stage Power Low-Pass Filtering Board for 25A Power Supplys - Walmart.com