Things to consider
- Mortise locks use Govt. 86 prep: 1 ¼” wide x 8” high
- Are face preps needed or 86 edge prep only?
- Is the trim (face prep) escutcheon or sectional?
- Is location given on door or frame?
- Lock mounting at hollow metal manufacturer’s standard location?
- Using standard 4 7/8” ASA strike?
- Lock function will be needed for sectional trim prep
Red flags
- Standard Govt. 86 prep needs 1 ¾” thick door minimum
- Location may vary if used as a Deadlock only
- Use with Electric strike could affect mounting location or strike needed
- Location of actual latch bolt varies per lock manufacturer
- CL of lock is 3/8” BELOW CL ASA strike
- Electric mortise lock functions will require conduit raceway to power source (electric hinge or EPT)
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Mortise lock with escutheon trim |
Universal 86 prep for escutheon trim |
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Mortise lock with sectional trim |
Mortise lock with special sectional trim |