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#602 DucTite® Uninsulated
#602 DucTite® Register Box w/Snap Rail Flange conforms to 2009 IRC M601.4.1 which requires joints and seams to be "Substantially Airtight". DucTite® is a registered trademark of M&M Manufacturing Company. Patented design US No. 5,749,190.
#602R6 DucTite Insulated
602R6 DucTite® Register Box w/Snap Rail Flange conforms to 2009 IRC M601.4.1 which requires joints and seams to be "Substantially Airtight". #602R6 DucTite® Register Boxes are insulated at the plant with a true R-6 DucTite® Insulator of EPS. DucTite® is a registered trademark of M&M Manufacturing Company.
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