The Fluval A20115 is an authentic replacement impeller cover designed for the Fluval 104 canister filter.
It is specifically engineered to fit impellers that utilize curved fan blades to help maintain proper water flow and minimize noise.

• Compatibility: It is exclusively manufactured to fit the older Fluval 104. It is not cross-compatible with newer Fluval 05, 06, or 07 series canister filters.
• Material: Typically constructed of molded, durable plastic that encases the magnetic impeller to ensure safe and quiet operation.
• When to Replace: You may need to replace the cover if the original one cracks, shows calcium buildup that impedes the rotor, or if the plastic retaining pins/lugs break off over time.