Schlage Commercial 12-103 Deadlatch, B250 Series, 2-3/4" Backset, 1-1/8" x 2-1/4" Face, Square Corner,

The Schlage 12-103 is a stainless steel B250 Series deadlatch on a 2-3/4 inch backset, sold as a replacement part in seven finishes from 605 bright brass through 626 satin chrome. Staying at the same 2-3/4 inch backset, the Deltana G1RLE275 is a Grade 1 regular latch with an entry function, and the Deltana G1RLP275 is the Grade 1 regular latch in passage/privacy. The 12-103 is a deadlatching latch matched to the Schlage B250 chassis; the Deltana pair are regular latches sorted by door function, so pick by which lock body the latch has to serve.

A deadlatch has a small secondary plunger riding alongside the main latchbolt. When the door closes, the plunger hits the strike and stays depressed, which mechanically blocks the latchbolt from being pushed back. That's what stops a credit card or shim attack on the latch. A plain spring latch has no plunger and can be loided. On any exterior or tenant entry opening, the deadlatching version is the one you want, and it's what the 12-103 is.

It's built for commercial duty and the latch body is stainless steel, which is what you want on a high-cycle opening and on anything exposed to weather at an exterior door. It's a genuine Schlage part rather than a generic aftermarket latch, so the plunger geometry and spring rate match what the B250 lock was engineered around.

If the lock chassis and trim are fine and only the latch is worn, binding, or the deadlatching plunger has failed, replacing just the latch is the fix. The 12-103 is sold as a Schlage replacement part on its own. If the chassis itself is the problem, you're buying a complete lockset, not this.

For a 2-3/4 inch backset, ZenSupply carries the Deltana G1RLE275, a Grade 1 regular latch in an entry function, and the Deltana G1RLP275 in passage/privacy for interior openings that don't lock with a key. Pick the function to match the lock you're feeding: entry for a keyed opening, passage/privacy for a bath or bedroom door. Both are 2-3/4 inch backset like the Schlage 12-103, so the door edge prep depth is the same.

Yes, if you are willing to change the lock rather than just the latch. The Lockey M230 is a mechanical keyless digital combination deadlocking spring latch lock with an adjustable backset, fitting doors 1-1/8 to 2 inches thick, so it covers both backset dimensions without a separate latch decision and removes keys from the opening entirely. The Schlage 12-103 goes the other way: it is a replacement deadlatch that keeps an existing B250 Series lock in service, in a finish matched to the rest of the door from 605 bright brass to 622 matte black.

Of the comparable latches, the Accentra YSSL10 security sidelite auxiliary latch is the one stated fire rated, for a 1-3/4 inch door. The Schlage 12-103 is a stainless steel certified Schlage deadlatch for the B250 Series; on a labeled door it has to be replaced in kind with the part the lock's own label covers, so match the B250 chassis rather than swapping in a different family's latch.

Function follows the lock, and the Deltana pairs show it directly: the G1RLE275 is a Grade 1 regular latch in an entry function and the G1RLP275 is the same Grade 1 regular latch in passage/privacy, both on a 2-3/4 inch backset, with the G1RLE238 and G1RLP238 the same split at 2-3/8 inches. The Schlage 12-103 is the B250 Series deadlatch, a deadlocking latch used where the lock secures the opening rather than simply holding the door closed. Order to the function the door is doing, then to the backset it is bored for.

Two approaches work. Stock both backsets in one family: Deltana offers Grade 1 regular latches as the G1RLE238 and G1RLE275 in entry and the G1RLP238 and G1RLP275 in passage/privacy, so the part changes only by backset and function. Or use an adjustable-backset unit like the Lockey M230, a mechanical keyless digital combination deadlocking spring latch lock that covers doors 1-1/8 to 2 inches thick with one SKU. Where the doors already carry Schlage B250 Series locks, the 12-103 deadlatch keeps those openings on their existing hardware at 2-3/4 inch backset, in seven finishes so the trim stays consistent across the fleet.

Seven finishes: 605 bright brass, 609 antique brass, 612 satin bronze, 613 oil rubbed bronze, 622 matte black, 625 bright chrome, and 626 satin chrome. On most installs only the faceplate shows on the door edge, so if you are standardizing a building, order the finish that matches your lock trim, most often 626 satin chrome or 613 oil rubbed bronze.