Does the bottom of the basin extend below the outer sink edge?A.
The internal basin does not extend past the external edge/basin. The overall height of the sink is 4.5" while the basin depth is only 2.5".
Is the back of the sink finished?A.
The American Standard 0621.001 is not finished on the back.
I assume the back has 2 mounting holes?A.
Yes you would be correct, there are 2 mounting holes spaced 12 7/8'' apart on the American Standard 0621.001.020.
What are the demensions of the faucet deck?A.
The width of the faucet deck is 4" and the diameter of the hole for the faucet is 1-3/4 inches.