How do you install a drain in a kitchen sink?
How do you plumb a sink?
What is the rough in height for kitchen sink drains?
In the bathroom, the sink drain is typically between 24 inches above the floor. Rough-in plumbing is usually placed at a somewhat lower height, between 18 and 20 inches, to accommodate varying counter heights and sink depths and leave plenty of space for the P-trap and necessary connections.