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“ three door interlock ”

Resolution: No, steel stiffeners are not required in Hollow Metal doors, they are one of many optional core available.Per ANSI/SDI A250.8 and ANSI/HMMA 867, core construction are optional offeri...:

INTERLOCKING SEAM

Resolution: Lock Seam Door, Mechanical Interlock:

SECURITY/SAFETY INTERLOCK FUNCTION

Resolution: SI:

SECURITY/SAFETY INTERLOCK

Resolution: SI:

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“ three door interlock ”

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