When it comes to sinks, the size of the gauge is important to consider. A 20 gauge sink is okay for most purposes, but if you are looking for a sink that will see a lot of use or one that will be used for commercial purposes, you may want to consider a sink with a lower gauge. A 20 gauge sink is also okay for a kitchen sink, but if you are looking for a sink to use in a bathroom, you may want to consider a higher gauge.