LTWHOME 6 Inch Inch Coarse Pond Filter Foam Cube Block Pump Pre Filter Sponge(Pack of 1)has an off centre hole cut out (3. 5" Diameter x 4. 5" deep) Coarse grade foam,Cuts Easy To Any Required Shape Package Include: 1PC 6" Inch Coarse Pond Filter Foam Good for freshwater & marine environments Traps Particles & Debris Enhances biological filtration

Custom designed and manufactured for the Hidom AP-1000L Filtration System

Size: Outer diameter 1

5mm x 65mm x 8mm

Size: 15cm length by 10cm diameter(Large)

Pack include: 6 x Filter Floss

Package inclued: 12 PCS Fine foam

The easyclear 4000/6000 requires 2 x foam filters

This filter pad is custom designed and manufactured for PM 1000 and PM 2000

Foam size: 17 inch x 11 inch

Thickness: 12mm(1/2")

Contain 5 replacement foam filter rings

6 x Fine filter