Recently bought our house– an addition to the house had this funny vent to the exterior, (no fan, no filter, just a hole in the wall with a cover).
We took it off to pain the walls and I totally lost the interior cover… I can’t find anything online for what it is so Im turning to you all. What is this thing and where do I find a new one? Do they make them this small with little fans inside? Should it have a little fan inside?
The hole has about a 3.5″ diameter, had no fan… I can’t find any vents that are this small so Im confused of its purpose! Thanks!