4 H, 3 PK, American Filter Co, Mfr#: AFC-EPH-300-12000SK-3p-16808

Performance: Built to the highest quality standards : Contaminent Reductions down to 0.5 Micron level.VERY IMPORTANT: Please CONFIRM FITMENT – Filter dimensions 3.4′′ Tall X 12.25′′ WideDisclaimer: Do not use this filter with water that is Hot. Do not use the filter with water that is microbiologically unsafe or of unknown quantity. DO NOT use this filter longer than its intended 12 Month use. Doing so may result in leaks and water damage. Install Instructions: 1. Turn off Water Supply2. Remove existing filter.3. Install new filter in head and turn till locked.4. Turn on Water Supply.5. Check for leaks.6. Flush system for 3-5 Minutes.