Schlage Commercial 12-297 Deadlatch, Square Corner, 2-3/8" or 2-3/4" Adjustable Backset Deadbolt

Both. The 12-297 has an adjustable backset that sets to 2-3/8 or 2-3/4 inches, the two backsets used on commercial doors, so one part covers either prep. If you maintain a building where openings were bored at different times, you stock one latch instead of two.

The front measures 1-1/8 x 2-1/4 inches and the corners are square. Where the door edge is already routed for a square corner front at that size, it drops straight in. A radius corner mortise will not match a square front, so on those doors you want a radius corner latch instead of trying to make this one sit flush.

Only the latch. The 12-297 is a replacement latch unit, which is what you order when the lockbody and trim on a commercial opening are still good and the latch is worn, dragging, or damaged. The lockbody, cylinder and trim are separate parts.

Match the latch to the lock brand and series. A replacement latch has to agree with the lockbody on front size, backset and how the latch is retracted, and those differ between makers. The 12-297 is a Schlage commercial latch with a 1-1/8 x 2-1/4 front. The Dexter Grade 1 Deadlatch for C1000 Series, by comparison, is built for Dexter C1000 locks, so the two are not interchangeable.

A deadlatch carries a small deadlocking plunger alongside the latchbolt. When the door shuts, the plunger rides on the strike and blocks the latchbolt from being pushed back, which is what defeats a card or shim on an exterior opening. A regular latch has no plunger. Deltana's G1RLE238 and G1RLE275 are regular entry latches, ordered as fixed 2-3/8 or 2-3/4 inch backsets rather than one adjustable part, and the same latch in passage or privacy function is the G1RLP238 and G1RLP275. Regular latches are fine inside the building; use a deadlatch where the door faces out.

Satin chrome 626 is the finish it is built in, and 626 is the standard commercial finish, so it sits alongside 626 levers, cylinders and strikes without standing out. Once installed, the front is the only part of the latch that shows on the door edge.

Stainless steel, which is the reason to use it on an exterior opening rather than an interior one. Moisture tracks down the door edge and into the mortise, and a stainless latch handles that better than plated steel.

No, Schlage marks the 12-297 as not ADA compliant. Worth knowing what that does and does not change on your opening: ADA is about the hardware a person operates, so on a door with compliant lever trim, swapping the latch inside the door edge does not by itself make the opening compliant or non-compliant. If the piece you need to be ADA compliant is the thumbturn, the Accentra YSSL10 Security SideLite Auxiliary Latch is listed with an ADA compliant thumbturn.

Replacing the 12-297 latch changes nothing about how the door is operated, it keeps the lock you already have. For keyless, the Lockey M230 is a mechanical combination lock with a deadlocking spring latch and an adjustable backset, and it fits doors 1-1/8 to 2 inches thick, which covers both 1-3/4 inch commercial doors and 1-3/8 inch interior doors. No power, no wiring, code changed at the lock.

They are different latch types, so treat them as separate parts rather than one-for-one swaps. The Schlage 12-297 is a deadlatch with a deadbolt latch type, square corner, and a front measuring 1-1/8 inch by 2-1/4 inch, adjustable to a 2-3/8 inch or 2-3/4 inch backset. The Deltana G1RLE238 and G1RLE275 are Grade 1 regular latches in entry function, built at 2-3/8 inch and 2-3/4 inch backsets respectively, and the G1RLP238 and G1RLP275 are the Grade 1 regular latches in passage/privacy function at the same two backsets. Where the door prep and the lock call for a deadlatch, stay with the deadlatch; where a regular latch is what the opening uses, the Deltana parts are the ones to size by backset and function.

Both are deadlatches sold as replacement parts, and the deciding factor is the lock they go into. The Dexter deadlatch is built for the C1000 series, so it belongs on a door already carrying that lock. The Schlage 12-297 is a commercial replacement part in stainless steel, square corner, with a 1-1/8 inch by 2-1/4 inch front and an adjustable 2-3/8 inch or 2-3/4 inch backset, supplied in 626 satin chrome. Pull the existing latch and check the front dimensions and corner shape against the mortise in the door edge before ordering either one.

The Schlage 12-297 is a deadlatch for use with doors, square corner, adjustable to a 2-3/8 inch or 2-3/4 inch backset. For the sidelite itself, the Accentra YSSL10 is a security sidelite auxiliary latch made for that application and comes with an ADA compliant thumbturn; it lists a 1-3/4 inch door thickness and carries a fire rating. On a storefront or glass front where the active leaf and the sidelite are being secured together, those are two different parts - the deadlatch goes in the leaf, the sidelite latch in the fixed panel.

Those are two different scopes of work. The Schlage 12-297 is a replacement deadlatch, so it services a lock that is already hung on the door and keeps the existing trim and keying. Changing the door over to keyless means replacing the lock itself: the Lockey M230 is a mechanical keyless digital combination deadlocking spring latch lock with an adjustable backset, and it lists a door thickness range of 1-1/8 inch to 2 inch. Measure the door thickness and confirm the prep before switching over, since a complete lock has to suit the door where a latch only has to suit the lock.