The Pentek BN-410-200 200 micron filter bags are 70-80% efficient, The Pentek BN-410-200 Nylon Monofilament Filter Bags should be used with water with a ph range of 6-9, The Pentek BN-410-200 monofilament bags are compatible with a broad range of corrosive fluids including organic solvents, oils, acids, alkalis and microorganisms, The BN-410-200 Monofilament Filter Bags can withstand temperatures up to 200F (93, 3C), The Pentek BN-410-200 bag filter is made of woven monofilament materials, The Pentek BN Series Bag Filters are offered in nylon with micron ratings of 50-800 microns, Depending on your water supply, the Pentek BN-410-50 Filter Bags can be cleaned and reused (although not indefinitely), Dimensions: 4"" W x 8-5/8"" L (102 mm x 218 mm), SKU: CWD2423