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Duct Construction Specs: stainless steel gauge
26 to 28
ASHRAE duct construction specifications: sheet metal gauge thickness and weight for galvanized, uncoated, and stainless steel ductwork; duct leakage percentages by leakage class and flow ratio; and maximum allowable fan system leakage by HVAC system type
| data type | gage | minimum thickness in (in) | nominal thickness in (in) | nominal weight 300 series lb per ft2 (lb/ft2) | nominal weight 400 series lb per ft2 (lb/ft2) |
|---|---|---|---|---|---|
| stainless steel gauge | 26 | 0.0148 | 0.0178 | 0.748 | 0.733 |
| stainless steel gauge | 28 | 0.0131 | 0.0151 | 0.634 | 0.622 |
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