Honritone 7 Inch Filter Sock Bags 1 Micron – By 18 Inch Long – Aquarium Felt Fabric Sump Filter Bag – 2 Pack

Feature: Material:Polypropylene (PP) Size(Ring DiameterLong Length): 7 inch x 18 inch Available in 1 Micron Packing Quantity: 2 Pack Filter Sock Kindly Tips:Porosity is defined by nominal micron ratings (1 510255075100200) indicating the largest particle that can pass through in general and reflecting an increase in the density. 1Micron mesh very small200Micron mesh more wider.