1 Free shipping & free returns. 2  Get the HP OfficeJet 4650 All-in-One for only $29.99 with the purchase of any PC! 3  Save an additional $20 off the HP 23er 23-inch Display with any PC purchase.  Save an additional $10 off the HP 22er 21.5-inch Display with any PC purchase.
The most common kitchen counter height is 36 inches, but it can vary from 30 to 45 inches. The standard kitchen sink is 8 inches deep, which means that the normal distance between a kitchen sink drain and the floor is 28 inches. This will vary, depending on the height of the counter and the depth of the sink bowl. In the bathroom, the sink drain is typically between 24 inches above the floor.
As long as the sink drain and its vent are connected in a straight line, the drain can serve as a wet vent for the toilet. This means, however, that if there's a blockage downstream of the sink, water can back up through the sink pipe. You can get a good idea of the plumbing configuration to which the sink is attached by noting which fixtures make the sink back up when they drain. They may also back up when other fixtures are draining.