Smacna Hvac Air Duct Leakage Test Manual

Sheet metal and air conditioning contractors national association 4201 lafayette center drive chantilly virginia 20151 1219 tel 703 803 2980 fax 703 803 3732. Representative sections totaling no less than 25. Smacna recommends using leakage classes in table below when the designer has not designated leakage limits.

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