Ductwork shall be constructed and installed to prevent "oil canning".
One-Year - Work and Materials. · Damage due to normal shrinkage of materials caused by drying after construction is not covered by the statutory warranty.
Ductwork not meeting the acceptable performance shall be repaired.
Weight transfer on floors over metal ductwork can sometimes result in a temporary deflection of the metal ductwork. Shrinkage of floor joists may cause “oil canning”.
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