1.Perfect Fit Compatibility: Pack of 12; Dimensions: 6.5' x 1.6' x 0.9'(L x W x H); Compatible with DF10 (1.3 Gallon/170oz/5L) DF30 (2 Gallon/270oz/8L) large dog water bowl dispenser automatic cat drinking fountain; The dog water fountain carbon filters replacement is accurate in size and easy to install 2.Advanced MultiStage Filtration: Crafted with premium activated carbon and elastic sponge, these pet fountain replacement foam filters comprehensively remove cat hair, food residue, impurities, particles, heavy metals, and odors, delivering clean, fresh water that's gentle on pets' delicate systems 3.For The Health of Pet: Made of highquality, , and odorless materials, these cat water fountain filters guard your pet's by enhancing water quality and promoting urinary system wellness 4.Regular Maintenance Reminder: For optimal pet hygiene, remember to replace the filters every half month. Regular filter changes ensure your pet enjoys the benefits of clean, filtered water consistently