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Are all of the QMB blanks 23 inches wide?

Issue:
Are all of the QMB blanks 23 inches wide?

Product Line:
QMB Panelboards

Environment:
Clarification

Cause:
Replacement

Resolution:
Yes, current design is 23 inches.  However, blanks before 1984 are 19`` wide and are obsolete.

 
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