20 MICRON RATING: With a nominal filtration rating of 20 microns, our quality pleated cellulose sediment filter reduces fine sediment particles from a wide range of filtration uses 10x4.5 NOMINAL: Actual filter dimensions are 9.76" L x 4.5" D, and the filter is made with non-woven pleated cellulose filter media SPECIFICATIONS: Filter has an initial pressure drop of <1 psi at a flow rate of 20 gpm and a temperature rating of 40°F to 126° QUALITY REPLACEMENT: Comparable to Pentek S1-BB / 155405-43, American Plumber W20CLHD / 155405-51, Ametek S1-BB, Culligan S1-BB, and other 10x4.5 pleated water filters 30-DAY GUARANTEE: SpiroPure filters have a 30-day money back guarantee. If you do not like the performance of your filter, you can send it back within 30 days of purchase for a full refund
