Compatible with Waterbox INFINIA FRAG 125.4, 155.5, 175.6, 150.4, 190.5 and 230.6, also compatible with PENINSULA 4820, 6025, 7225, and compatible with REEF LX 290.6, 330.7, and 380.8 The filter bag is made of high quality non-woven material with good water permeability and durability. This material ensures unobstructed water flow and keeps the filtration effect undiminished for a long time, making it an ideal choice for cleaning your fish tank Package includes 20 Pack 7 Inch honeycomb design filter sock for fish tank, the size is 4 inch ring by 14 inch long, With its unique honeycomb structure design, the filter bag can efficiently capture fine impurities, improve water clarity and effectively remove suspended solids. Reusable and Washable: Unlike disposable options, our felt filter socks are reusable. Simply rinse them out with clean water after each use, and they are good to go again, saving you money in the long run Satisfaction Guaranteed: If you have any questions about the products, whether before or after the sale, please feel free to contact us. Our customer service team is always ready to help Compatible with Waterbox INFINIA FRAG 125.4, 155.5, 175.6, 150.4, 190.5 and 230.6, also compatible with PENINSULA 4820, 6025, 7225, and compatible with REEF LX 290.6, 330.7, and 380.8. Aquarium Filter Sock 3D Honeycomb Design Filter Sock. Aquarium Filter Bags for Saltwater.