Similar to many others, I'm installing a new sink that is significantly deeper than the one it is replacing. Due to added sink depth and the location the builder chose to install the original drain - I believe I need to lower the drain so that the waste can properly drain.
After the new counter top, undermount 10" deep sink, and garbage disposal, I've determined that the garbage disposal drain will be about 1/2" below the center of the waste drain.
I've determined that the drain is a dirty arm (horizontal style) drain instead of a more traditional trap drain (vertical style).
How would one go about lowering the drain 3" or so specifically with this dirty arm setup? Tearing into the wall under this cabinet is not a problem, but access to the left of the cabinet where it appears the sanitary tee is would be a significant challenge.