Source: WDMA
Two of the Window and Door Manufacturers Association (WDMA) Total Product Performance™ standards for interior architectural wood doors have been approved as American National Standards. ANSI/WDMA I.S.1A-13, Industry Standard for Interior Architectural Wood Flush Doors, and ANSI/WDMA I.S.6A-13, Industry Standard for Interior Architectural Wood Stile and Rail Doors have received their recognition from the American National Standards Institute (ANSI) Board of Standards Review.