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Duct Construction Specs: uncoated 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 | nominal thickness in (in) | nominal weight lb per ft2 (lb/ft2) |
|---|---|---|---|
| uncoated steel gauge | 26 | 0.0179 | 0.75 |
| uncoated steel gauge | 28 | 0.0149 | 0.625 |
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