Features: Helps keep water beautifully clear. The external filter cotton board can effectively filter impurities, keep the pump clean and prolong the service life. Made of materials, which is durable and reliable. Easy to install, convenient to clean and replace the filter cotton plate. It is suitable for users in homes, offices, hotels and other places who use waterfall pumps. Our filter can be widely used in waterscape facilities such as fish tanks, flower pond and fountains to ensure a clear and transparent water quality and provide a healthy environment. Specifications: Material: Cotton Size: Approx.13.5x5.4cm/5.31x2.13inch Quantity: 2 Pcs Package Includes: 2 Pcs Filter Pad note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color of the item.