- Supply line (height): Two holes; vertically, both are about 2 to 3 inches above the drain pipe.
- Supply lines (horizontal): Two holes; one hole is 4 inches to the right of centerline; other is 4 inches to left of centerline.
What height do you stub out vanity drain?
The water supply line runs out of the wall into a hole in the back of the vanity, typically placed at a height of 22 to 24 inches from the finish floor. The sink drain is then situated just 4 inches inward from the water supply line.