Check the listing for details. Replacement Sponge Filter Media Pad Compatible with CPF-250 Pressure Pond Filter. Condition: New. Listed at 52.95 USD. Replacement Sponge compatible with Polar Aurora CPF-250, CPF-180 , 10000L Pressure Pond FiltersYellow sponge: 7.875” (L) x 7.875” (W) x 1.125” (H)Blue sponge: 10” (L) x 10” (W) x 1.375” (H)Includes: 3 pieces of yellow sponge, 3 pieces of blue sponge. Note: Due to the vacuum packaging the sponge pads may look thinner, which does not affect the filter effectiveness and you can soak them in water for 5-10 mins to get its original dimension. Descriptions: Replacement Sponge compatible with Polar Aurora CPF-250, CPF-180 XtremepowerUS/ VIVOHOME/Casart /Goplus 10000L Pressure Pond Filters Yellow sponge: 7.875” (L) x 7.875” (W) x 1.125” (H) Blue sponge: 10” (L) x 10” (W) x 1.375” (H) Complete Set of 6pcs of sponge (3 pieces of yellow sponge, 3 pieces of blue sponge)