Short definition
Faucet spread is the horizontal distance between the centers of the two outermost mounting holes on a deck-mounted faucet. The three standard categories are single-hole, 4-inch centerset, and 8-inch widespread. Mismatching the spread to your sink’s hole pattern is the number-one reason DIY faucet purchases get returned.
What it is
Deck-mounted bathroom and kitchen sinks come pre-drilled with one, three, or four holes. Faucets are sized to fit those patterns:
- Single-hole. One hole (typically 1-3/8 or 1-1/2 inch). One handle, one spout, all on a single body. Common on modern bath vanities and most pull-down kitchens.
- Centerset (4-inch). Three holes with handles 4 inches center-to-center. The faucet body is one casting that spans both handle stems and the spout.
- Mini-widespread (4-inch). Three holes at 4-inch spread, but the faucet has three independent pieces (two handle bases plus a spout) like a true widespread.
- Widespread (8-inch). Three holes with handles 8 inches center-to-center. Three independent pieces. Allows larger and more decorative faucet bodies.
- Wall-mount. No deck spread; spread refers to the wall-pipe spacing (typically 8-inch centers).
Why it matters to a homeowner
Every bathroom-faucet box lists the spread. Look at your sink before you shop. An 8-inch widespread won’t fit a 4-inch centerset sink, and a centerset won’t reach a sink drilled for widespread.
Two escapes from a mismatch: a deck plate covers extra holes when you’re going from multi-hole to single-hole, and pedestal-sink replacements often lock you into single-hole or 4-inch centerset. Start with the sink, not with the prettier faucet.