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Little green air lines?
Found this question on another forum... Any ideas...
"I have noticed that a lot of the homes going up around my development have
little green or white (air?) lines that run around the windows and doors in
the frame of the house and all run back to a central location.
They seem to be about the thickness of about 16 ga. or 18 ga. wire but they
are hollow plastic like air lines.
I have noticed these with many builders, not just one.
What are they for?"
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