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Calculated R-values for Amarr door sections are in accordance with DASMA TDS-163.
Effective January 1, 2009, the Door and Access System Manufacturers Association (DASMA), which represents over 90% of the door and access systems manufacturers in the US and Canada, put into effect a voluntary standard for manufacturers to list R-values in accordance with DASMA Technical Data Sheet (TDS) #163
Read more about DASMA TDS-163
When comparing R-values among garage door manufacturers, be sure to look for statements that mention DASMA TDS-163.
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