Weslock 15142X1-SL Dual Option 2-3/4" Dead Latch for Interconnected Locks

The 15142X1-SL is a 2-3/4 inch backset dead latch, so it's meant for doors bored with the deeper of the two standard residential backsets. If the existing bore on your door measures 2-3/8 inches from the door edge to the center of the cross bore, this is the wrong latch for that opening. Measure the hole before ordering, because a 2-3/4 latch will not reach the spindle on a 2-3/8 prep.

An interconnected lock needs the dead latch built for it. The 15142X1-SL is specified for Weslock interconnected locks, where the lever retracts the latch and the deadbolt together. A plain passage or privacy latch has no auxiliary deadlatch plunger and won't give you the deadlatching action the interconnected function relies on. Substitute a generic tubular latch here and the lockset either won't operate correctly or the latch won't stay deadlatched against the strike.

The Weslock 15142X1-SL is a 2-3/4 inch dead latch for interconnected locks, so it is fixed at that backset. When the bore is prepped at 2-3/8 inch, the Deltana DLP23875 is a drive-in latch with an adjustable backset of 2-3/8 inch or 2-3/4 inch in a passage/privacy function, and the Deltana DLE23875 is the adjustable drive-in latch in an entry function. Confirm the function you need first: entry latches carry the deadlocking plunger that a keyed or interconnected opening relies on, while passage/privacy latches do not.

They serve the same opening but they are not the same part. The Weslock 15142X1-SL is a 2-3/4 inch dead latch built for Weslock interconnected locks, so it is matched to that chassis and comes in finishes including oil rubbed dark bronze, bright brass, satin brass, antique brass and satin chrome. The Deltana DLE23875 is a drive-in latch in an entry function rated for doors 1-3/8 inch to 2 inch thick, and a drive-in latch has no faceplate mortise, so it seats in a bored edge rather than a routed one. If the door edge is already mortised for a face-plated latch, the drive-in style will not sit flush.

On the 15142X1-SL, dual option refers to the faceplate: the latch ships to work either as a drive-in latch or with a face plate, so one part covers both door preps. That matters if you're carrying stock for a building where some doors are bored for a mortised faceplate and others take a drive-in collar. Weslock builds it as a dead latch, meaning it carries the auxiliary deadlatch plunger alongside the main latchbolt.

Just the latch. The 15142X1-SL is the replacement dead latch that goes into the cross bore of a Weslock interconnected lock. It does not include the lever, rose, cylinder, or deadbolt. Order it when the latch itself has failed or when you're changing to a 2-3/4 inch backset, not when you need a complete lock.

The Kwikset 83518 is an RCAL adjustable square drive latch carrying a UL 3 hour listing, and the Kwikset 83521 is the RCAL plain latch, UL 3 hour, for Kwikset BBL, KNL, CNL and PLL chassis. The Kwikset 84290 is a square corner plainlatch at a fixed 2-3/8 inch backset, also UL. These are Kwikset-chassis parts, so they pair with a Kwikset lock rather than with a Weslock interconnected lock, which takes the Weslock 15142X1-SL 2-3/4 inch dead latch.

A dead latch such as the Weslock 15142X1-SL is built for interconnected locks, where the latch has to deadlock against a keyed or thumbturn-driven function. A privacy or passage opening does not need that. The Deltana DLP23875 is a drive-in latch in a passage/privacy function with an adjustable 2-3/8 inch or 2-3/4 inch backset for doors 1-3/8 inch to 2 inch thick. For a pocket door running a tubular privacy latch, the Emtek 83228 is the square corner faceplate and screw set for that latch rather than the latch itself.

Two commonly confused parts. The Emtek 83228 is a faceplate and screw set for a tubular pocket door privacy latch with square corners, so it is trim hardware, not a latch mechanism, and it will not replace a Weslock 15142X1-SL dead latch. The Emtek LC9-DBLTCH is an EMPowered motorized deadbolt latch, which is driven by the electrified deadbolt it belongs to rather than by a lever or interconnected chassis. The 15142X1-SL is the mechanical 2-3/4 inch dead latch itself, sold in oil rubbed dark bronze, bright brass, satin brass, antique brass and satin chrome.

Mostly it's the faceplate that shows on the door edge, and that's why the 15142X1-SL comes in five finishes: Oil Rubbed Dark Bronze, Bright Brass, Satin Brass, Antique Brass, and Satin Chrome. Match it to the lockset trim so the edge of the door doesn't read as a repair. If you're installing it drive-in with no exposed faceplate, the finish choice is cosmetically moot.

No. The Weslock 15142X1-SL is a bored-door dead latch, not pocket door hardware. For a tubular pocket door privacy latch, the Emtek 83228 is the faceplate and screw set with square corners. Different hardware family entirely, so the Weslock part won't fit that mortise.