I'm having a problem finding a sink that will fit due to a high drain pipe. The center point of the horizontal drain pipe that exits thru the back wall is 14 1/2" below the bottom of the counter top, or 20 off the floor. There will not be a disposal, but will need a dish washer drain fitting above the p trap. The countertop will be 1 1/4 thick. This is in a high rise condo and the drain cannot be lowered. What type of sink (drop in or under mount) and what depth sink will fit these measurements?