My drain on my washer was plugged. I have the duet machine. Where the drain housing from the drum connects to the pump. There 4 was pieces of cloth, all same size actually inside the pump. I've pulled them out but I just want to make sure they aren't actually part of a filter. the way they were in, it didn't seem like a filter to me. Didn't make sense that some clothing squares would make it that far to me either.