The EHEIM professional 4+ stands out as Eheim's best external filter, with an integrated ‘emergency’ button. This advanced filter ensures powerful performance, optimal energy efficiency, quiet operation, priming aid, and a safety hose adapter - all made better with the new ‘Xtender’ button to redirect flow if output is reduced. Available in three sizes for aquariums of 250, 350, or 600 liters, it includes many bonus features. A top pre-filter traps large dirt particles, a „Easy Clean“ grid makes maintenance simple, and ceramic axle ensures quiet running. Initial setup is a breeze with the self priming aid and original filter media, and you can rest assured that the professional 4+ filter will keep your aquarium healthy for longer. Rated for 45 to 87 gallons, with a flow rate of 262 GPH and power consumption of 16W. Dimensions: 9.4" x 9.6" x 15.7".