About this item
The Schlage L9050 is the office/inner entry function in Schlage's L-Series heavy-duty mortise lock family. It carries ANSI function F04 and it's the go-to specification for private offices, inner corridors, and any door where the occupant inside needs to be able to lock out visitors without leaving the room.
The "17" in the model number refers to the lever style- the 17A, 17B, 17N, and 17L are all available on this listing and they're designed to match Schlage's ND-Series lever shapes if you're running both cylindrical and mortise locks on the same project. American Locksets is an authorized Schlage dealer. Same-day shipping, free on orders over $300, and you can reach us at 877-471-4870.
What ANSI F04 Actually Does
F04 is one of the most specified mortise functions for offices because it gives the occupant inside real control without requiring a key. Here's how the full operation breaks down:
When the outside lever is unlocked, the latchbolt retracts freely from either side by lever. That's standard entry mode- anyone with access can push through.
The occupant inside can lock the outside lever two ways: by turning the thumbturn on the inside rose, or someone outside can lock it with a key. Once the outside is locked, the outside lever doesn't move. Entry from outside requires a key. The person inside can still leave freely at any time- the inside lever is always free for immediate egress.
To unlock from inside without a key, the thumbturn rotates back to vertical. The outside lever is immediately operational again.
The auxiliary latch deadlocks the latchbolt automatically when the door closes, so the latch can't be pushed back by hand. That's standard across the L-Series.
L9050 vs L9053 vs L9080: Picking the Right Function
The L9050 (F04) is office/inner entry- both inside and outside can operate the lever, outside can be locked by thumbturn or key from outside.
The L9053 (F05) is entrance/office- outside is normally locked, key required for entry, inside always free. That's the storeroom/office variant people reach for when outside entry should be controlled at all times.
The L9080 (F07) adds a deadbolt to the latchbolt- for applications that need two-point securing.
If your hardware schedule calls for F04, the L9050 is it.
Physical Specifications
Door thickness: 1-3/4" (44mm) standard. Optional 1-3/8" to 2-1/2" (35mm to 64mm)- call us for non-standard thickness pricing.
Backset: 2-3/4" (70mm) only.
Case size: 4-7/16" x 6-1/16" x 1" (113mm x 154mm x 25mm).
Armored front: 1-1/4" x 8" x 7/32" standard.
Deadbolt: 1" (25mm) throw stainless steel. Latchbolt: 3/4" (19mm) throw stainless steel with anti-friction tongue.
Spacing: Lever to cylinder 3-7/8" (98mm). Lever to thumbturn hub 2-11/16" (68mm).
Strike: ANSI curved lip 1-1/4" x 4-7/8" with 13/16" lip to center, dust box included standard.
Handing: Field reversible without disassembly.
Cylinder, Levers, and Finishes
Cylinder: 6-pin C keyway or Everest C123 keyway, two keys included standard. IC (interchangeable core) prep available. Master keying, grand master keying, and construction keying all supported.
Lever styles on this listing: 17A, 17B, 17N, 17L- forged brass, bronze, or cast stainless steel.
Available finishes: 626 Satin Chrome, 613 Oil Rubbed Bronze, 622 Matte Black, 630 Satin Stainless Steel.
UL/cUL listed for A-label single doors 4' x 10' and pairs 8' x 10'. California Referenced Standards Code compliant (levers return within 1/2" of door face).
Trusted Since 2001
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