The Schlage THP-8201-CH is the OEM spring latch for the Schlage LT Series tubular levered lock in the passage configuration. It ships with a 2-3/8" backset, a 1" x 2-1/4" square corner faceplate, and includes the mounting screws. It is designed for 1-3/8" thin door applications. Finish must be specified at time of order.

This is the passage latch - the latch bolt retracts freely from either side by lever operation with no push-button, no keyed cylinder, and no locking mechanism involved. When the latch bolt fails on a passage function LT Series lock - the spring weakens, the bolt drags, or the latch no longer snaps back to the extended position - this is the correct field replacement. It is not a full lock replacement; it is the latch assembly only.

Schlage Spring Latch: How the THP-8201 Works

A spring latch is a latch bolt that is both spring-loaded and beveled on its leading face. The spring holds the bolt in the extended position by default. The bevel means that when the door is pushed closed, the angled face of the bolt contacts the strike plate lip and is driven back (retracted) automatically by the closing force - no lever turn is needed to close the door. Once the door fully closes and the bolt clears the strike plate, the spring pushes the bolt forward into the keeper pocket in the strike, securing the door in the closed position.

The THP-8201 spring latch operates the same way. Lever turn retracts the bolt from either side (passage function, no restriction). The door close automatically engages the bolt into the strike. No key, no button, no separate action required.

This is the correct latch for any LT Series door where both levers are always active: closet doors, pantry doors, laundry rooms, office passage doors, conference room interior doors, and any opening where free two-way passage is needed with no locking requirement.

Schlage Spring Latch Replacement: Backset and Door Thickness Compatibility

The THP-8201-CH is the 2-3/8" backset version for 1-3/8" thin doors. The backset is the distance from the door edge to the center of the lever spindle hole. Thin door applications - typically 1-3/8" interior doors - use the shorter 2-3/8" backset so the latch bolt projects correctly into the strike without the mechanism sitting too deep inside the door.

For standard 1-3/4" door thickness, the correct spring latch is the THP-8301-CH, which uses a 2-3/4" backset and a slightly wider 1-1/8" x 2-1/4" faceplate. Ordering the 2-3/8" backset (THP-8201) for a standard 1-3/4" door will result in incorrect latch projection and a strike alignment problem. Confirm door thickness before ordering.

Schlage Spring Latch Repair: THP Latch Part Number System

The Schlage LT Series latch catalog uses a consistent part numbering format that decodes directly to the latch specification. The THP prefix applies to all LT Series latches. The "82" in the middle code identifies the 2-3/8" short backset. The "01" function code identifies passage - spring latch with no locking mechanism. The "CH" suffix identifies the chrome-finish housing.

The full THP-8201 latch family breaks down as follows: THP-8201-CH is this product (passage, 2-3/8" backset, no fire rating). THP-8201-CH-F is the UL 3-hour fire-rated version of the same latch for fire-rated door assemblies. THP-8219-CH is the privacy latch (push-button locking) at the same 2-3/8" backset. THP-8301-CH is the passage spring latch for standard 2-3/4" backset doors. Replacing a fire-rated passage latch on a rated opening always requires the -F suffix version - substituting the THP-8201-CH on a rated assembly voids the door assembly's UL listing.