 MAUMEE, Ohio--BUSINESS WIRE--Therma-Tru has been named the Brand Used Most in the entry doors category, marking more than 20 consecutive years receiving this distinction. In the 2021 Builder Brand Use Study conducted by Zonda formerly known as Hanley Wood, Therma-Tru ranked first in Brand Used Most and Brand Used Most in the Past Two Years, tied for first in Highest Quality, and ranked second for Brand Familiarity. Were proud of our ongoing relationship with builders throughout 