I live in an old ass house and this metal grate and white metal cover is over a giant hole in the wall and floor shared by the hallway / dining room. Whats it for?
s hole is in the wall and floor shared between my dining room and hallway. Under the heavy cast iron grate is what seems like metal duct work material but there’s no outlet in there I can see. The white cover doesn’t move but is made from what feels like flexible aluminum.
Here are some of the answers:
- It was probably part of a vintage heating system.
- Cold air return to the furnace
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