Outer Length: 5.91 inch * Inner Length: 4.13 inch; Intake hole is not all the way through
Qzbhct pre filter sponges are designed for canister filters for Aquaclear 70 and 110 filters; Can also work for Aqueon and other larger hang on back filters as well
Advantage: The Replacement Foam Pre-Filters Fits inside your Pre-Filter to provide efficient water flow
Easy to replace: Easy to use, sponge cover directly onto the water inlet of your filter
