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Old 03-17-2011, 09:28 AM   #1
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Attic Ductwork - Need some ideas

Hi, I'm new and need some advice.

I recently replaced my attic airhandling unit due to its age and the mold/dust living in it etc.. The distribution system on the supply side is "radial" in that there are 4 10" flex trunks that feed into ductboard triangles with further split from there.

I Opted to replace the Ductboard supply and return boxes with lined metal boxes, and I would like to eliminate any ductboard remaining in the system.

What are my options in replacing the ductboard triangles? New ductboard triangles? galvyTri-Wyes? fabricate some Metal Triangles?

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Old 03-17-2011, 10:05 AM   #2
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Attic Ductwork - Need some ideas

Hi and Welcome RustedBrit, to the best darn DIY'r site on the web.

A couple of pictures of the system you are trying to modify would be a great tool to assist in coming up with a qualified answer.


When its all said and done there is usually more said than done
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Old 03-17-2011, 01:02 PM   #3
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Attic Ductwork - Need some ideas

Metal Wyes adding insulated wrap
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Old 03-17-2011, 03:05 PM   #4
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Attic Ductwork - Need some ideas

A little late now, but you should have used sheet metal and then wrapped it. Lined sheet metal can form mold as easily as duct board.
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