Tunze Usa 1076/2 Through The Back Overflow Box, Requires 1.75-Inch Bore Hole

Built-in overflow for lateral glass boreholes diam. 1.75 in on the rear or lateral wall of the aquarium with surface and bottom suction up to about 400 US gal./h. Water outlet diam. 40 mm).For easy installation and quiet operation we recommend the use of overflow hose set 1075/2.