This is a hang-on protein skimmer designed for tanks with a capacity of 100 L to 120 L. It has a powerful venturi pump with an energy-saving needle-wheel, the Rock SP-600. The pump consumes 8.5 watts and can work with both 110/220V. The approximate dimensions of the skimmer are 145 x 110 x 265 mm (L*W*H). It can be attached to aquariums with a thickness of up to 12 mm. The Rock SP-600 impeller pump is also included. The skimmer has a silent design and low power consumption. It comes with a waste check valve pipe that helps to remove the harmful waste from the water. Please note that the actual unit has an inbuilt pump and all the accessories, but it does not come with a paper box or a wrapper pack.