Housings for SFIC and LFIC Interchangeable Cores

Housings come in one of two flavors (click one for more options):

If you're a door vendor, you've likely heard the phrase, "furnish housings only to receive small format interchangeable cores." This way the GC, facility manager, or building standard locksmith doesn't have to worry about hardware compatibility. You install the housings with your hardware, and all he has to do is come by and insert the interchangeable cores (IC). Quick & easy.

LFIC Large Format GMS Mortise HousingWhen you need to provide IC Housings, there are just a few things you need to know:

  • Rim or Mortise? Depending on what type of lockset they’re going in, you’ll either have a small vertical tail (Mortise) or long horizontal tail (Rim). Mortise housings are most common for all different types of locksets which have levers. Rim housings are used specifically for door pulls and some deadbolt applications.
    • If mortise, what type of cam? The cam is the tail that goes on the back, which interfaces with your lockset. If you don't know (don't worry, most people don't), just select your hardware from the "compatible with" dropdown on the product page.
  • Small Format (SFIC) or Full Size (FSIC)? Small format is the same for any brand of interchangeable cores, but if you need to accept full size interchangeable cores, you will need to know the specific brand of cores that will be used.

To get started, click the housing style you need:

And if you actually do need cores too: