Totalponds Universal Pump Filter Box Protects The Pump From Debris. This Product Includes The Filter Box, A Coarse Filter Pad For Collecting Large Debris, A Fine Filter Pad For Collecting Small Debris, And Bio-Balls For Growing Beneficial Bacteria.The Universal Pump Filter Box Cleans Water, Promotes The Growth Of Beneficial Bacteria, And Protects Pumps From Debris In Small Ponds Up To 500 Gallons.Includes 1 Course Black Filter, 1 Fine Blue Filter, And Multiple Bio-Balls.This Filter Box Works With Any Totalpond Fountain Pump (Pump Not Included).16 Ft. Power Corddimensions: 6.2 X 12.4 X 5.8 In.