Compatibility: Compatible with PETLIBRO 71oz/2.1L Capsule Pet Water Fountain PLWF002. Please check your fountain model before purchase. Package: Individually packaged and sealed to maintain high quality, making the correct choice for your filtration needs. Material: The pet fountain filter is composed of high-density fabric, activated carbon, and ion exchange resin. It can filter hair, heavy metals, and improve the taste of water so that pets can drink clean and fresh water. Note: Rinse the filter with water before use. Clean the filter every time you change the water in the cat fountain. Replace the filter and sponge every 2–4 weeks. Product Benefits: Removes impurities Color: As shown in photo Material: Activated carbon, resin Package Contents: 12 x Replacement Filters 12 x Pre-Filter Sponges Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement may vary by +/- 1-3 cm.