Efficient Magnetic Drive Technology Supreme(R) Aqua-Mag 1.9 to 36 Series Pumps have been designed to handle virtually any application where water has to be moved. They have been fulfilling the needs of professionals and hobbyists for over 20 years with efficient, quiet and reliable 24/7 performance. Aqua-Mags are ideal in either saltwater or freshwater environments and operate equally well in-line or submerged. With only one moving part, a magnetically driven impeller and an epoxy-encased power unit, there's never a fear that they will contaminate the water with harmful oils or chemicals. Features o Reusable Debris Pre-Filter o Operates Submerged or In-Line o 10' Grounded Power Cord o Energy Efficient o Models 1.9 - 3/8 " MPT Inlet, 1/4 " MPT Outlet o Models 2, 3, 5 and 7 - 1/2" FPT Inlet, MPT Outlet o Models 9.5, 12 and 18 - 3/4" FPT Inlet, MPT Outlet o Model 24 and 36 - 1" FPT Inlet, MPT Outlet