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Old 12-05-2015, 04:13 PM   #5791
Senior Member
Join Date: Oct 2004
Posts: 1,900
To ipaq4444,

Best is insulate both.

And if 4 sets of piping with 1/2 insulation, cannot fit into 4 x 3 trunking, it will be squeezed and defeats the purpose of having thicker insulation in the first place.

Min 6 x 3 or 6 x 4 for better fitting.
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