Compatibility: Only compatible with PETLIBRO Dockstream Cat Water Fountain models PLWF105, PLWF115, and PLWF005. Please verify your model and product dimensions before purchase. Easy to Install and Clean: These replacement filters are designed for simple removal and installation, making maintenance quick and convenient. For optimal performance, soak the filter and sponge in water for at least 3 minutes before first use to activate filtration properties, then rinse thoroughly under running water. Helps keep water fresh and clean between changes. Healthy Filter Ingredients: Features a triple-stage filtration system composed of activated carbon, ion exchange resin, and non-woven fabric. Effectively reduces impurities such as pet hair, chlorine, and heavy metals while improving water taste and quality. Provides clean, fresh water to support your pet's hydration and overall health. Premium 12-Pack Replacement Kit: Includes 12 replacement filters and 12 pre-filter sponges. All components are individually sealed to ensure freshness and quality. Designed to last 3 to 12 months depending on usage and number of pets. Replace the pre-filter sponge every 2 to 4 weeks for best results. Dual Sponge Protection: High-density pre-filter sponge captures larger debris and enhances overall filtration efficiency. High-density pump sponge helps protect the pump by preventing particles from entering, contributing to longer pump lifespan. Product Details: Color: As shown in photo Material: Cotton (sponge components), activated carbon, ion exchange resin, non-woven fabric Package Contents: 12 x Replacement Filters, 12 x Pre-Filter Sponges Note: This package includes only the items listed above. Other accessories or fountain units are not included. Due to lighting and screen display differences, actual product color may vary slightly from images. Measurement may vary by +/- 1–3 cm.