Nothing really to see. Your filter is likely the same as mine, I just have two installed on my line. One at the tank discharge and one 1' from the boiler gun. Don't know wny, that's just the way the home builder did it. When I change my filters I put a new filter in the one close to the boiler. The removed one then replaces the one at the tank outlet. I doubt the second filter is catching anything the first isn't.Can you trade a picture of yours? The only filter that I know for sure is the fuel filter inline from the tank
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