20 micron rating: with a nominal filtration rating of 20 microns, our quality pleated cellulose sediment filter reduces fine sediment particles from a variety of water filtration needs 10x4.5 nominal: actual filter dimensions are 9.76" l x 4.58" d, and the filter is made with pleated cellulose polyester filter media specifications: filter has a temperature rating of 40°f to 180°f quality replacement: comparable to pentek ecp20-bb / 255491-43, american plumber w20cphd, ametek cp20-bb, culligan cp20-bbs, 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
