Retro Bottle Filling Station, For HACMfr #: HTHB HAC RF Touchless, sensor activated bottle filler, designed for easy use; retrofits existing HAC 115V style coolers. Fill rate is 1. 5 GPM. Visual filter monitor with LED filter status indicator for when filter change is necessary. The 3,000 gallon filter is certified to NSF 42 and 53 for lead, Class 1 particulate, chlorine, taste and odor reduction. Green Counter informs user of number of 20 oz. plastic water bottles saved from waste.