We can't use it in the 21, but it can be used in all other sizes of Escape trailers if you're not getting the sink and you want a different style handle than what they would supply (which is a 2-knob style). In Brushed Satin Nickel.
It's already at ETI as we thought it could be used in our trailer, but unfortunately it can't. Priced at over $36 on Amazon, but your price is $30. ETI can hold on to it for you until it's needed during your trailer build (I've already confirmed this with Reace).