A door with no knob is often called a "door without a knob" or simply a "knobless door." Depending on the context and design, it might also be referred to as:
- Push door (if it’s meant to be pushed open without a knob or handle)
- Sliding door (if it slides open instead of swinging)
- Flush door (if it has a smooth surface without protruding hardware)
If it’s missing a knob unintentionally, you might just say it’s a door with a missing knob. Would you like to know about types of door hardware or how to open or install such doors?
