Pleatco PFAB60-4 Replacement Pool and Spa Filter 4 ounce media fits the Pentair / Pac Fab Mytilus-B 60 GPM MY 60, Mitra 60 GPM MA-60/160, Mytilus 60 60 GPM MY 60, Mytilus-B 140 GPM MY 140 (2 required) and Wet Institute Modufilter M-180 (3-required). Pleatco Pool and Spa filters will protect your investment engineered to outperform the competition and exceed your expectations. Featuring high durability filter fabric that maintains strength even when loaded with sediment, a tighter porosity and denser weave to capture more contaminants in less time, and a high strength, high flow core designed to support the filter while providing industry leading flow rates. Pleatco Pool and Spa filters will clean your water faster and more efficiently with less wear and tear on your pump. Order now!