The Omnipure K-Series K5586 inline filter is a phosphate GAC inline filter. This filter comes in 3/8" QC fittings. This filter can be used in ice makers, refrigerators, beverage equipment, drinking fountains, under the counter systems, R.O. Systems and in conjunction with purification systems. This filter aids in the removal of taste, odor and chlorine taste and odor along with a polyphosphate scale inhibitor. Additional Details ------------------------------ Product description: The Omnipure K-Series K5586 inline filter is a phosphate GAC inline filter. This filter comes in 3/8" QC fittings. This filter can be used in ice makers, refrigerators, beverage equipment, drinking fountains, under the counter systems, R.O. Systems and in conjunction with purification systems. This filter aids in the removal of taste, odor and chlorine taste and odor along with a polyphosphate scale inhibitor.