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TI-27

AAMA TI-27-1002.10-93; Sash Perimeter Crack Length

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Interpretation Requested:

If a vertical or horizontal sliding storm window insert, that is weatherstripped, is made non-operative only by a screen and/or removable mull bar, would this insert also be used in calculating that sash crack perimeter for the air infiltration test?

Date of Inquiry: September, 1980

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