A slab door is just the door panel itself, without the frame, hinges, or other hardware. It’s usually installed into an existing door frame, unlike a prehung door , which comes already mounted in its own frame.

Quick Scoop

  • What it includes: the door slab only.
  • What it does not include: frame, hinges, and hardware.
  • Best for: replacing a door while keeping an existing frame, or when you want more control over hardware and fit.
  • Common materials: wood, hollow core, solid core, fiberglass, or steel.

Why people choose it

Slab doors are often more economical than prehung doors, and they can be a good option if your current frame is in good shape. They also come in styles that work for both interior and exterior use.

Simple example

If your bedroom door frame is still solid, you can buy a slab door and attach it to the existing hinges. If the whole frame is damaged or missing, a prehung door is usually the easier choice.

Bottom line: a slab door is the “bare door,” ready to be fitted into a frame you already have.