PES1P1P 1 Micron Polyester Felt Filter Bag with Handle – Size 1 - Basco USA
2.75 Inch Felt Filter Bag - Crystal Clear Aquariums
1/2 (0.5) Micron 7" x 16" Polyester Felt Filter Bag PTFE Coated: Industrial Process Filter Bags: Amazon.com: Industrial & Scientific
Amazon.com: 4 Inch Ring Polypropylene Felt Filter Bag 1 Micron 4" x 9" Liquid Aquarium Filter Socks Size 3 - Pack of 2 (4" x 9", 1 Micron) : Pet Supplies