The EHEIM professionel 4+ – our best external filter but now with an integrated ‘emergency’ button.
We have adopted the many advantages of the professional 3 series – powerful performance, optimal energy efficiency, quiet operation, priming aid, safety hose adapter – but we have also improved the technology by incorporating the new ‘Xtender’ button.
In the event the output is reduced due to the fine filter media blocking, the button can be adjusted to redirect the flow. The biological filtration is main-tained and the service interval can be extended by a few days.
There are 3 sizes available for aquariums up to 250, 350 and 600 litres. The models 250 and 350 are also available with an integrated heater as thermo filter (T). In addition, the professionel 350e can be electronically controlled from a PC.

Advantages of the EHEIM professionel 4+ filter
| EAN | 4011708224984 |
| Article No. | 2275020 |
| UPC | (-) |
| For aquariums of about. | 240.00 l |
| For aquariums up to approx. | 600.00 l |
| Pump power (50 Hz) per hour of approx. | 1,250.00 l |
| Pumping head approx. (H max at 50 Hz) | 1.80 m |
| Power(50 Hz) to | 16 watt |
| Filter volume | 6.50 l |
| Pre filter volume | 0.50 l |
| Container volume | 9.20 l |
| Width | 238.00 mm |
| Height | 453.00 mm |
| Depth | 244.00 mm |
| Voltage | 230 volt |
| Standard power plug | EUR |
| Packing | 1 Part (s) |
| Packing dimensions(Width) | 29.80 cm |
| Packing dimensions(Height) | 49.50 cm |
| Packing dimensions(Depth) | 24.00 cm |
| Hose Ø Suction side(inside) | 16.00/22.00 mm |
| Hose Ø Druckseite(inside) | 16.00/22.00 mm |
| Freshwater | yes |
| Sea water | yes |
| For outdoor use | no |