Comparison
Single-Bore Vs. Double-Bore Prep
Compare single-bore and double-bore handle prep so the door arrives with the correct hardware preparation for the project.
What single-bore means
Single-bore prep is the standard latch preparation for a typical handle or knob setup without a separate deadbolt hole.
What double-bore means
Double-bore prep adds the extra hole for a deadbolt plus latch. It is common when the opening needs a separate lock above the handle.
Why the choice matters
This is a small field in the builder, but it is not trivial. The correct prep saves field rework and keeps the installed door aligned with the intended hardware package.
Take the next step
Once the comparison is clear, move into the guided quote flow or jump into a common size route.