WDMA I.S.6A-11, Industry Standard for Interior Architectural Wood Stile and Rail Doors and WDMA I.S.1A-11, Industry Standard for Interior Architectural Wood Flush Doors, are now open for their second ballot for recognition as American National Standards. WDMA I.S.6A-11 defines the aesthetic grades and performance duty levels for interior architectural wood stile and rail doors. WDMA I.S.1A-11 defines the aesthetic grades and performance duty levels for interior architectural wood flush doors.
PB Topical Ref
