Jerry Simon Posted June 11, 2023 Report Share Posted June 11, 2023 Up in the attic, on the main plumbing vent stack. Any idea what it is? Link to comment Share on other sites More sharing options...
Marc Posted June 11, 2023 Report Share Posted June 11, 2023 (edited) It may be something to just close the two openings that were left after removing some plumbing fixture that was there before. But I can't think of a fixture that would be installed within an attic. Edited June 11, 2023 by Marc Link to comment Share on other sites More sharing options...
hausdok Posted June 11, 2023 Report Share Posted June 11, 2023 ??????????????????? Link to comment Share on other sites More sharing options...
Jerry Simon Posted June 11, 2023 Author Report Share Posted June 11, 2023 (edited) 1 hour ago, Marc said: It may be something to just close the two openings that were left after removing some plumbing fixture that was there before. But I can't think of a fixture that would be installed within an attic. You might be close. . . I think I might have an idea, now, after just finishing the report. The house had a radon mitigation system installed, with the ventilation fan installed outside on the side of the house. This might have been a previous, ass-backwards install of a radon fan using the plumbing stack as its vent pipe. Edited June 11, 2023 by Jerry Simon Link to comment Share on other sites More sharing options...
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