Schlage L9050R06B Entry / Office Mortise Lock with Large Format IC Core C Keyway

On the L9050, the lever retracts the latchbolt from either side until the outside is locked, either with the key outside or by turning the inside thumbturn. Once locked, the outside lever is inoperative and the latch is retracted by the key outside or by the inside lever. That inside thumbturn is what office and suite users want: staff can lock the door from inside without a key and still get out freely.

It is built for 1-3/4 inch doors with a 2-3/4 inch backset, which is the standard commercial door and mortise backset. The mortise case measures 4-7/16 x 6-1/16 x 1 inch, so the pocket in the door edge has to be cut for that case. If your leaf is thinner than 1-3/4 inches or already cut for a different case size, this is not a drop-in.

Yes, it is a handed lock, so you need to know whether your opening is left hand, left hand reverse, right hand or right hand reverse before ordering. Stand outside the door: the side the hinges are on and whether it swings in or out determines the hand. Some competing mortise bodies are field reversible (the BEST 45H public entrance body and the Falcon MA101 passage lock both are), but with the L9050 you order the hand you need.

The R in the part number is the large format interchangeable core prep, C keyway, so an LFIC core drops in and can be pulled with a control key without taking the lock apart. That is what a property manager or institutional locksmith wants for rekeying a building without dismantling hardware. The base L9050 cylinder spec is a conventional 6-pin cylinder in the C keyway, so it keys into an existing Schlage C system.

The standard strike is the 10-072, a 1-1/4 by 4-7/8 inch square corner strike with a box and a 1-3/16 inch lip. If your frame is already prepped for a 4-7/8 inch ANSI square corner strike, it lines up. Curved corner frames or a T-strike prep will need a different strike ordered with the lock.

No on both counts. The L9050 is specified for 1-3/4 inch doors only, and it is a wide mortise case at 4-7/16 x 6-1/16 x 1 inch, which an aluminum storefront stile will not take. For a thicker leaf, the Hager 3800 Series mortise locks cover 1-3/4 to 2-1/2 inches on the passage and office versions with the same 2-3/4 inch backset. For glass storefront, look at a bottom rail lock such as the Kaba Ilco BR Series instead.

The L9050 is entrance/office: the outside lever is made inoperative by key or by the inside thumbturn, and when locked the latchbolt retracts by key outside or lever inside. For an opening that must always require a key from outside, look at storeroom function instead - the Accentra 8805FL is a Grade 1 storeroom mortise lock with Arcadia lever, and the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset for 1-3/4 inch doors with an interchangeable core option.

The Cal-Royal NM8050 is the nearest match. Like the Schlage L9050, it is a Grade 1 entrance/office function mortise lockset for 1-3/4 inch doors, and the L9050 carries the same Grade 1 rating, Entrance/Office function and 1-3/4 inch door thickness. The NM8050 is described with an auxiliary deadlatch, while the L9050 ships with a conventional 6-pin C keyway cylinder and the 10-072 1-1/4 inch x 4-7/8 inch square corner box strike.

No, the backset differs. The L9050 uses a 2-3/4 inch backset with a mortise case 4-7/16 inch x 6-1/16 inch x 1 inch. The Baldwin 6301 entry/apartment lever by lever and the Baldwin 6310190RRLS entry/storeroom lever by lever are both 2-1/2 inch backset mortise lock bodies, so the door prep will not line up without rework. The Baldwin 6301 is listed for doors 1-3/4 inch and over, the 6310 for 1-3/8 inch and over.

It is a commercial Grade 1 heavy duty mortise lock with an ANSI/BHMA F04 function designation. The case is cold rolled steel with zinc dichromate plating for corrosion resistance. Grade 1 is the highest ANSI/BHMA level, which is what most institutional and multi-family specs call for on entry and office doors.

No. It is a purely mechanical mortise lock, no wiring, no batteries, no card reader. If the opening needs access control, the mortise alternatives include the Schlage Electronics LEMD-GRW Grade 1 ENGAGE wireless mortise lock with 125kHz proximity reader, the BEST 45HW wired electromechanical mortise lock running 12V or 24V, or the Command Access ML190 motorized mortise lock with field selectable EL/EU operation on 24VDC.

Yes. The L9050 is keyed with a single cylinder, so if the door needs no key control the Hager 3850E is a Grade 1 office function mortise lock with lever and escutcheon that is non-keyed, with a 2-3/4 inch backset matching the L9050's 2-3/4 inch backset. For a straight passage latch, the Falcon MA101 is a Grade 1 heavy-duty mortise passage lock with field reversible operation, and the Hager 3810S is a Grade 1 passage mortise lock with rose trim and a 2-3/4 inch backset.

The L9050 is a handed mortise lock, so hand must be specified at order. If field reversibility matters for stock, the BEST 45H heavy duty mortise lock body is public entrance function with field reversible operation, and the Falcon MA101 is a Grade 1 heavy-duty mortise passage lock with field reversible operation. Note both differ from the L9050 in function - the L9050 is entrance/office.

Only if you want credential-based access rather than a mechanical key. The L9050 is non-electronic and keyed with a C keyway cylinder. Electronic mortise alternatives include the Schlage CO-100 standalone electronic mortise lock in privacy function, Grade 1, heavy duty, for 1-3/4 inch doors; the Schlage Electronics LEMD-GRW Grade 1 ENGAGE wireless mortise lock with 125kHz proximity reader; and the TownSteel FME-2000, a Grade 1 heavy duty classroom mortise lockset with RFID for 1-3/4 inch doors. All change the function and the credential, so confirm the opening's access plan before substituting.

No. The L9050 is a latchbolt lock with lever trim whose latch retracts by lever from either side unless the outside is locked. The Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset, and the Kaba Ilco 185 Series is a deadbolt function mortise lock with no handing - neither provides a latch or lever operation. Those are deadbolts to add alongside a latching lock, not replacements for one.

The L9050 is a standard lever-trim entrance/office lock and is not a ligature-resistant design. For those openings, the TownSteel MRX-L-01 is a Grade 1 heavy duty anti-ligature lever mortise lockset in passage function for 1-3/4 inch doors, the MRX-A-01 is the ligature-resistant arch trim version in passage function, and the Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset that is ligature resistant and ADA compliant. All three are passage function rather than the L9050's keyed entrance/office.

Consider the Sargent 7925, a Grade 1 heavy duty corridor/dormitory exit function mortise lock with rose trim and a single cylinder deadbolt in the 7900 Series. The L9050 is Grade 1 heavy duty as well, but it is entrance/office function with a latchbolt only and no deadbolt, and it uses a single cylinder.

Use a privacy function mortise lock instead. The Cal-Royal NM8440 is a Grade 1 privacy mortise lockset with deadbolt for 1-3/4 inch doors, and the Hager 3840S is a Grade 1 privacy mortise lock with a 2-3/4 inch backset for 1-3/4 inch to 2 inch doors. The L9050 is keyed entrance/office function, which is not intended for restroom privacy.

No. The Marks USA 21AC and 22AC entrance double cylinder ornamental iron mortise locks are listed for 1 inch door thickness, while the L9050 is specified for 1-3/4 inch doors. The L9050 is also single cylinder, where those are double cylinder designs.

It comes with either the 06 lever or the 07 lever, both in 626 satin chrome. Both are lever trim, not knob, so they meet the lever-operated hardware requirement most commercial and accessibility specs call out. Pick the lever style that matches the other doors in the building.

It is not a substitute for the lock. The L9050's inside thumbturn is part of the lock function - turning it makes the outside lever inoperative. The Sargent 130KB is a standard duty mortise thumbturn in the 8200 Series and the 130W is a standard duty mortise thumbturn with a round backplate in the 7800 Series; those are trim items for Sargent mortise locks, not components of the Schlage L9000 Series.