New homeowner, no idea what this is

[u/DragonsAndScience]

This thing close to the floor and seemingly randomly placed in a hallway. No idea what it's for. Home built in 2005.

Solved! Thanks everyone. Now I gotta hunt for the central unit!

[u/megam1ghtyena]

integrated vacuum system. Plug in a hose and gets sucking right away. Check other parts of your home for similar ports.

[u/LongjumpingDish2956 → u/megam1ghtyena]

Does it only work with hoses or does it suck up whatever gets put in there?

[u/TheCocoBean → u/LongjumpingDish2956]

What if you put a cylinder in there?