I have an old cast sink I will be replacing soon. I put this in over 25 years ago and the sink was installed with a hudee ring. I wish to use a drop in sink for the replacement but am uncertain how to measure to make certain the new sink simply drops into the current opening. The sink has rounded edges.
Measuring the outside opening of the ring the measurements are 25"X22"X8". This seems to be a standard size but not sure how the drop ins are made. I also recall a very difficult time trimming back the counter top when I put this in for fear of chipping the surface which is a laminate. Any advice would be appreciated.