For aquariums and fish tank filters
Believe to be Rite size C6 Dimentions Of black plastic is 53/4 x 61/2
I have 11. Pkg of 6 sells for about $ 20.00 without taxes.
Heavy-duty plastic frame with floss and carbon traps dirt effectively. Each pre-assembled aquarium filter cartridge slides easily into place, providing superior mechanical and chemical filtration, and making replacement fast, dry and effortless. Each pre-assembled aquarium filter cartridge slides easily into place,