For tanks from 35 to 70 gallons 264 gph pump Designed for quick and easy maintainence Integrated trickle chamber for a healthy aquarium Cleaning indicator rises when the poly/foam pad requires rinsing Includes filter media: Poly/foam mechanical filter pad, c-nodes bio media & activated carbon Dimensions: 8.75" Tall X 8.25" Wide X 6.25" front to back. 3.75" needed behind the aquarium.