Laguna Skimmer Filter Provides both mechanical and biological filtration all in one unit for ponds up to 5,000 gallons. Can be combined with the Laguna Filter Falls for increased filtration for ponds up to 10,000 gallons. Combines pumps 900 up to 3000 gph (not included) and filter "all in one" outside the pond for ease of service and camouflaging. Provides efficient removal of floating debris and oxygen robbing protein film. Includes debris net, filter pad, biosphere media, and rubber winterizing door. Features: Ideal for skimming large ponds and water gardens Great for large ponds Easy to install Macro Filtration removes any solids in the water Bio filtration removes toxins in the water Cover has built-in handles for easy access, and they are lockable! Pump Chamber is very spacious Measures 33" x 20" x 20"