Schlage L9000 and Von Duprin mortise locks are not dimensionally the same and Schlage L9000 locks cannot be used with Von Duprin exit devices. See below the comparison of the Von Duprin 7500 to the Schlage L9000.
• The Von Duprin lock case is smaller (5-7/8") compared to Schlage (6")
• The distance from the cylinder to the lever is different (3-1/4" VD) (3-55/64" Sch) by just under 5/8"
• The centerline of the latch in relation to the bottom of the lock case is different. (2-7/8" VD) (2-3/8" Sch)
• The centerline of the cylinder to the centerline of the latch is different. (1-7/8" VD) (2-3/4" Sch)
Von Duprin 7500 (left) - Schlage L9000 (right)
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