Atrium Multipoint Lock Hardware — Replacement Parts & Strikes

Replacement Multipoint Locks for Atrium Brand Doors

Atrium doors have used several different multipoint lock systems throughout their production history, making replacement parts identification essential for successful repairs. The locks in this collection address the two primary eras of Atrium door production: the Ferco-equipped doors from the late 1980s through early 1990s and the G-U Tripact-equipped doors manufactured between 1995 and 2006. MPLocks carries the specific replacement kits needed to match these original configurations, including updated versions when original parts are no longer manufactured.

Ferco 528 Replacement Options for Older Atrium Doors

The Ferco multipoint locks used in earlier Atrium wooden doors feature a 28mm backset and 70mm PZ spacing with five locking points—a handle latch, two rollers, and two shootbolts. While the original old-style Ferco 528 is discontinued, the new-style Ferco 528 replacement kit provides a compatible solution. These kits accommodate standard Atrium doors up to 81 inches tall, with extension pieces available for taller door applications requiring additional length.

G-U Lock Kits for Mid-Production Atrium Doors

Atrium doors built between 1995 and 2006 typically used G-U Tripact multipoint locks with a 45mm backset and 92mm PZ spacing. The replacement G-U kit features a key-below-handle configuration with tongue-style locking points. This updated kit replaces the discontinued old-style 3-point Tripact system while maintaining the same critical dimensions for proper door fit and strike plate alignment.

• G-U Ferco Multipoint Lock Hardware
• G-U Ferco Lock Cases and Repair Parts
• American Cylinder Handleset Trim

Identifying Your Atrium Lock Configuration

Before ordering, measure your existing lock's backset (distance from faceplate edge to cylinder center) and PZ spacing (distance from cylinder center to handle spindle center). Atrium doors typically use either 28mm or 45mm backsets depending on production era. The faceplate width and overall lock length should also be verified against your door's existing mortise pocket to ensure the replacement lock will install correctly without frame modifications.

If you're unsure which Atrium replacement lock fits your door, call (816) 221-6543 to speak with a multipoint lock specialist who can help verify compatibility. You can also submit your lock details through our free Multipoint Lock Identifier for expert review and personalized replacement recommendations.