3.2.4.4.(2)

Intent

Intent 1:

To supersede the requirement of Sentence (1) and allow a higher air leakage rate for revolving doors, automatic commercial sliding doors, and overhead doors that separate dissimilar environments, on the basis that the more stringent rate would compromise their function.

Intent 2:

To exempt revolving doors, automatic commercial sliding doors, and overhead doors that do not separate dissimilar environments from the air leakage rate requirement of Sentence (1), on the basis that air leakage under these circumstances does not result in thermal loss.

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