Four sided Internal Overflow is 10"x 10", has a 1.5" Pre-filter Assembly and two 1/2" Return assemblies with T swivle discharge flares. Used for tanks up to 24" tall.
This overflow is incorporated into the center of your tank. It is used in conjunction with a Wet-Dry Trickle filter. The overflow has a Pre-Filter Assembly, which is a layer of filter material wrapped around a standpipe. This is called mechanical filtration, it is what traps particles of debri. Additionally, this internal overflow includes two Return Assemblies, this is used to mask the hose that brings the water from the Wet-Dry filter pump below back into the tank. It comes with barbed fittings below the tank and two T swivle discharge nossles that are 2 inches below the water level.
The overflow is black by default unless YOU specify otherwise. All bulkheads are included and all bulkhead holes are pre-drilled. Overflow also comes with a cover.
See Internal Overflow in out Library Section for more information.