Package Includes: you can get 2 replacement coarse and fine filter pads sets, including 2 coarse filter pads and 2 fine filter pads, enough to use and replacement, you can use them for water filtration Size Information: the pond filter pad is about 10.31 inches/ 26.19 cm long, 5.12 inches/ 13 cm wide and 0.98 inch/ 2.49 cm thick, compatible with mode 52231 and 52229 filter boxes; Check the size carefully before an order Practical and Useful: install the pond filter pads replacement in the filter box, coarse filter pads can capture large debris and the fine coarse filter pads can catch small debris in the flow of water, to reduce clogging, extending the service life of your filter box Safe and Reliable: the replacement filter pads are made of quality material, safe for fish and plants, not break easily and have good filtration efficiency, can greatly remove the waste and debris to keep the water in the pond clean Warm Tips: the replacement pond filter pads are reusable, and we recommend you to replace the filter pad annually for optimal cleaning performance; The filter pads are applicable not only for ponds, but also for outdoor aquarium and fountain Color: Blue & Black Material: Sponge Package Contents: 2pcs * black sponges 2pcs * blue sponges Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.