What does the "QTR" suffix mean in NC68SHRQTR?

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Issue:
Understanding the meaning of the "QTR" suffix in the part number NC68SHRQTR.

Product Line:
NQ and NF Panelboard

Environment:
Products sold in North America.

Resolution:
The "QTR" suffix indicates that the standard hinged trim has been modified to includetwo Quarter Turn Fasteners—one positioned above the flush lock and one below. This design provides three points of contact for the lock, enhancing security and stability.