*Pack of (2) 7" Filter Socks, 200 Micron Bags, Made in the USA
(2) 7 inch Filter Socks (7" diameter, 16" long, 200 micron).   Polyester Felt, Sewn construction, Glazed Finish with 7" ring.   Filter socks are the most convenient form of mechanical filtration. They remove excess food, detritus, organic waste, dust, and other particulate. Removing these particulate from the water column will reduce the amount of organic matter that produces ammonia and other undesirable substances in the aquarium. Filter socks also help prevent larger objects, such as sand, crabs, snails, etc. from damaging pump motors. Regular filter sock use will lower organic levels and result in CRYSTAL CLEAR WATER!   This unit is made by Peco Facet, Div of  CLARCOR Company.   CLARCOR is the most diverse filter company in the world. http://www.clarcor.com/.    Please Note: "Clarcor" Company has recently changed their division of this product from "Purolator" to "Peco Facet".  During this transition, some products may have different tags but they are the same products.  Very high quality material.