Material and Size: made of micro fine polyester pads; Sized about 7 x 7 x 0.79 Inches/ 18 x 18 x 2 cm, they effectively clear out waste particles and impurities to provide your aquatic pets a clean, healthy environment Compatibility: our product is designed to be compatible with Fx4, Fx5, Fx6 filters, our water polishing pad can the ideal results for your aquarium's inhabitants Package: we've included 24 pieces of fine filter water polishing pads in one single pack, sufficient quantity to meet your daily replacement, an exceptional good choice for habitual aquarists Easy Use: our pads are easy to install and replace; It is recommended that you replace the filter pad every 2-8 weeks and replace the filter frequently to maintain a healthier water environment in the aquarium Practicality: these pads deliver an filtration performance; They easily trap small particles and waste, improving your aquarium's water clarity, and bring the functional efficiency of your filter Features: Not only does our Fine Filter Water Polishing Pad aids in keeping your aquarium environment hygienic, but it also sustains its white color over time. This not only indicates when it's time for a replacement but also reflects a neat, polished water aesthetic The fine filter pads help maintain a balanced aquatic ecosystem by preventing harmful pollutants from disrupting the water conditions. By filtering out waste and particles, these pads contribute towards a stable environment for your aquarium's diverse lifeforms. Specifications: Material: Micro Fine Polyester Pads Color: white Size: 7 x 7 x 1.38 Inches/ 18 x 18 x3.5 cm Package includes: 24 x Fine Filter Water Polishing Pad Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.