ANSI/WDMA I.S.1A-13 defines the aesthetic grades and performance duty levels for interior architectural wood flush doors. Similarly, ANSI/WDMA I.S.6A-13 defines the aesthetic grades and performance duty levels for interior architectural wood stile and rail doors. The new ANSI standards provide uniform aesthetic criteria, performance evaluation, construction and factory finishing requirements, and tests to ensure all products complying with the standard are evaluated on an equal basis. The ANSI standards also provide a logical system of references, keyed to a guide specification, to facilitate thorough, precise, and accurate architectural specifications.
ANSI/WDMA I.S.1A-13 and ANSI/WDMA I.S.6A-13 were developed by the members of the WDMA National Architectural Door Council (NADC), and a canvass list of organizations and experts knowledgeable in architectural door construction, use, and specification. The 2013 ANSI standards update and replace the former standards, WDMA I.S.1A-11 and WDMA I.S.6A-11.
These two new ANSI standards also coordinate their content with each other and with the 2009 Architectural Woodwork Standards (AWS), resulting in more consistent and comparable product requirements amongst these three documents.