Dimensions: L 125 x W 55 x H 220 mm (L 4.9 x W 2.1 x H 8.6 in.); maximum immersion depth approx. 210 mm (8.2 in.); patented magnet holder to be fitted up to a glass thickness of 19 mm (.74 in.); variable pumping power from 150 to 800 l/h (39 to 211 USgal./h); 230 V / 50 Hz (115 V / 60 Hz); 8 W. For aquariums from 40 to 200 litres (10.5 to 52.8 USgal.) of salt water / fresh water.