How to Use a Single-Hole Faucet in an 8-Inch Spread, 3-Hole Sink
Sinks usually come with three standard holes so you don't have to make your own. One hole is in the center and two on the outside, spaced either 4 or 8 inches apart. Single-handle faucets with central water tubes that fit through one hole sometimes come affixed to a base long enough to cover the unused holes. Some modern faucets, however, as well as those intended for custom installations, may not have a base. If you want to use one of these on an 8-inch three-hole sink, you'll have to cover up the unused holes.