Replacement filter cover for the Aqua Clear 20 and Mini hang on tank aquarium filter.
Prevents the entry of foreign materials into the filter itself.
Has a slot for the protrusion of the U Tube adjustment device which allows fine tuning of the filter's flow rate.
Note for Fluval EDGE Owners: This lid does not say EDGE like the original - it will say AquaClear in raised plastic letters.
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