KM-2 (9" x 1-3/8") For use with Mortise locksets with a deadlatch positioned below the latchbolt, in wood frame applications. Compatible Locksets: Accurate, Arrow, Best*, Corbin/Russwin, Falcon (1992 M Series), Sargent (7800, 8200 & 9200 series), Yale (8800). *For Best 45H &_47H deadlatch below, and Best 34H - 37H_deadlatch above.