The 18-Inch Internal Aquarium Filter by Petinbox is designed for tanks with a capacity of 40-120 gallons. This filter includes a submersible water pump, U-V filter, and main unit, all made of durable plastic, bio-sponge, and stainless steel materials. The filter is easily adjustable for water flow control and operates using a corded electric power source. With a weight of 2.01 pounds and dimensions of 13.94x5.28x4.37 inches, this filter is a reliable and efficient choice for maintaining clean and healthy water in your aquarium.