VEVOR Reverse Osmosis System, 800 GPD 8-stage Tankless Reverse Osmosis Water Filter, Under Sink Water Filtration System with Smart Display Faucet, 2:1 Pure to Drain Ratio

A hole in the countertop/sink is required for the included smart display faucet; the main unit installs under the sink and does not need a countertop hole. Fits hole size: 1¼" outer diameter, 1/4" pilot hole. You can use an existing unused hole (e.g., soap dispenser hole) without drilling new.

This device has a maximum inlet water pressure limit and is not universally compatible with wide-pressure applications; it cannot be directly connected to a high-pressure RV water pump. Inlet water pressure requirement: 14.5–58 PSI

Wastewater is discharged from the wastewater pipe into the sewer.

It is recommended to use the original standard water faucet .

It can not be used for well water.