AquaEuro USA 1/10HP Apex Titanium Aquarium Chiller. Dimensions 15.7 x 8.6 x 16.4 Inlet - 1/2" Outlet - 3/4" Flow Rate - 66 - 410 GPH Maintain optimum water temperature Digital LED temperature display control accurately maintains desired temperature Anti-Freeze System will not allow the heat exchanger to freeze Memory Recall will return the temperature back to temperature set before a power outage Corrosion resistant Titanium heat exchanger Powerful reliable compressor uses Dupont R134a ozone friendly cooling agent Automatic power surge shut off