Accentra (Yale) 2221 Mortise IC Cylinder Housing

The Accentra (Yale) 2221 is a Large Format Interchangeable Core (LFIC) mortise cylinder housing with a 1-1/2-inch body that accepts Yale Full Size IC cores. Also referenced as cus-2221, 2221z, 2221/2, and ic 2221, the 2221 is a housing-only product: no IC core is included and must be ordered separately. The housing installs in mortise lock bodies, exit devices, and other hardware that accepts the Yale LFIC mortise cylinder format at the 1-1/2-inch body depth. SKU: 2221.

What the 2221 mortise IC cylinder housing is and how IC mortise cylinders work

A conventional mortise cylinder is a single assembly where the outer housing and the inner core are permanently combined. Rekeying requires either replacing the entire cylinder or disassembling it to repin the core. An IC mortise cylinder separates the housing from the core: the housing stays permanently in the mortise lock, and the core is a removable insert that accepts the key and contains the pin stacks.

The 2221 is the outer housing portion of that system. It installs in the mortise lock case the same way a conventional mortise cylinder does. Once the housing is in place, an authorized person inserts the correct Yale LFIC core into the housing using a control key. Rekeying is performed by pulling the old core with the control key and inserting a newly combinated core. The housing stays in the lock and is never disturbed during a rekey. For the full IC housing range at American Locksets, browse the IC housings catalog.

What the cus-2221 and 2221z references mean

The cus-2221 prefix appears in distributor and dealer catalog systems as an internal reference format used for inventory structure, not a separate product line. All cus-2221 references identify the same Accentra 2221 LFIC mortise cylinder housing. The 2221z designation is a variant reference that also maps to this product in some ordering and specification documents. Any search for cus-2221, 2221z, 2221/2, or ic 2221 leads to this housing.

The 2221 and the 2213 are both Yale LFIC mortise cylinder housings, but they differ in body length and pin count specification. The 2221 has a 1-1/2-inch body and is specified for 6-pin LFIC cores. The 2213 has a 1-11/16-inch body and is specified for 7-pin LFIC cores. Confirm the correct body length against the mortise lock manufacturer's specification before ordering. For the 1-11/16-inch version for 7-pin applications, the Accentra Yale 2213 LFIC mortise housing is also stocked.

Which Yale LFIC cores are compatible with the 2221 mortise housing

The 2221 accepts Yale Full Size Interchangeable Core (LFIC) cores. The Yale 1210 is the standard 6-pin LFIC core compatible with the 2221 housing. The core is not included with the 2221 housing and must be ordered separately. The keyway on the core must match the keyway opening on the 2221 housing for the key to pass through correctly and engage the core plug.

In an LFIC system, the same cores installed in cylindrical locksets, exit devices, and rim cylinders throughout a building can also be installed in the 2221 mortise housing, creating a unified key control system across all hardware types. This is the primary operational advantage of specifying LFIC mortise housings rather than conventional mortise cylinders. For the full IC core range, browse the IC cores catalog. For cylinders, cores, and key components across all formats, the cylinders, cores, and keys section covers the available options. For mortise locks at American Locksets that accept the Yale LFIC cylinder format, the mortise locks catalog covers the available range.

IC core not included. Confirm body length (1-1/2 inch) and pin count (6-pin core) before ordering. Also referenced as: cus-2221, 2221z, 2221/2.