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Duct Material
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i]Vi ^i YdZh cdi Xdcig^WjiZ id hiVi^X ZaZXig^XVa
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Figure 17.
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[VXijgZY [dg Yjhi XdaaZXi^dc ^h i]Z WZhi X]d^XZ#
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Flexible Duct
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Figure 18.
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