I often get asked if the Cygnet Stainless PerfeFlo and Evolution Inks can be used as drop-in sinks. While not specifically designed for this use, several of our customers are installing them as drop-in sinks.
Below are pictures of an FSR3321APF-7 used as a drop-in. The flanges on the Cygnet sinks are better than the flanges designed for drop-in on other sinks.