2-pack for Elkay 51300C, 3000 gallons * 2,Equivalent to 45000 bottled Reduces chlorine, lead, cysts, improves taste absorbs odors Carbon block filter with spun polypropylene prefilter for optimal performance 11-3/5" height, ideal for bottle filling stations No RFID Chip, you can remove the RFID Chip from the original filter cartridge and stick it onto our filter cartridge, the system will not produces an error code Replacement filter for Elkay enhanced ezH2O bottle filling stations in high-traffic areas