KleenWater High Temperature Water Filters, 2.5 x 9.75 Inch with Scale Inhibitor, Maximum Temperature 180 degrees, 3 Pack High Temperature Water Filter Cartridge - maximum temperature 180 degrees Fahrenheit Manufactured with an integrated 3 stage process yielding true depth filtration. Dirt rust and sediment filtration, 5 micron, grooved surface to extend service life Made in the USA of 100% FDA Compliant Polypropylene Polyphosphate for Scale and Corrosion Protection