12 x 24" filter box with locking handle that provides easy access for cleaning. Includes carbon and polyester filter media pads. The polyester filter traps debris as it is drawn into the filter. The finer carbon-impregnated material filters the water further. Activated carbon helps eliminate unwanted colors and odors. Connects to inlet side of pump with 1" tubing and fittings provided. For use with 950 to 1800 gallon per hour pumps with intakes that accept 1" diameter tubing. Pump is not included. For ponds up to 1000 gallons with light fish population."