The FSB Narrow Mortise Lock (NML) is manufactured in the United States to meet the stringent demands of high-traffic commercial, institutional, and governmental applications. Built using a heavy-gauge steel case and stainless steel deadbolt, the lock features the ability to fit very narrow style door conditions. The magnetic version features a magnetic latchbolt. An excellent choice for high end residential applications.

The lock is backed by a 10 year warranty.