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6.1 Ductwork installed without kinks, sharp bends, compressions, or excessive coiled flexible ductwork

The following Solution Center guides provide specific guidance for ductwork installed without kinks, sharp bends, compressions, or excessive coiled flexible ductwork:

No Kinks or Sharp Bends in Flex Duct Installation
No Excessive Coiled or Looped Flex Ducts
Sufficient Cavity Space for Flex Ducts