Comparison : Item # E1-1S, Culligan® E1 Plus Series 0.17 Gallons Per Minute (gpm) Nominal Capacity Reverse Osmosis System
Item # E1-2S, Culligan® E1 Plus Series 0.35 Gallons Per Minute (gpm) Nominal Capacity Reverse Osmosis System
Item # E1-3S, Culligan® E1 Plus Series 0.52 Gallons Per Minute (gpm) Nominal Capacity Reverse Osmosis System
Item # E1-4S, Culligan® E1 Plus Series 0.69 Gallons Per Minute (gpm) Nominal Capacity Reverse Osmosis System
Item # E1-2L, Culligan® E1 Plus Series 0.83 Gallons Per Minute (gpm) Nominal Capacity Reverse Osmosis System