I’ve been looking for cheap 4in felt filter socks and I found a pack of 10 for $33 on eBay (didn’t even think people used that anymore) and they are pretty good so far. Just passing the word along. Link below:
4 inch felt filter sock, Pack Of 5, 200 Micron, 4in, 4”x10” | eBay
Find many great new & used options and get the best deals for 4 inch felt filter sock, Pack Of 5, 200 Micron, 4in, 4”x10” at the best online prices at eBay! Free shipping for many products!
rover.ebay.com
