Sorry the new box (and old sink) went in the trash earlier this week.
This one is the same make and gauge Elkay Neptune Top-Mount 25 in. x 22 in. Single Bowl Kitchen Sink - HD114625 at The Home Depot
just not on clearance for $24...
I had to enlarge the existing hole by close to an inch on 3 sides and about 2+ inches on the back edge. That gave me the rough hole size to fit the new sink in.
I don't have my posty note with the dimensions of my original sink... but the rough math would suggest that the new sink size was likely 22x25x7 and the original sink would be 19x25x6. The overhang lip of both sinks are different.
I have slept since then...
Hopefully that helps you. If you have any other questions, please ask.
2008 Silverado EXtCab 6.0 Vortex Max
2010 Forest River Surveyor SV-294
Equalizer 1000 WD/SC hitch
Prodigy Brake Controller