Cisa - 20780 Recessed Silver Fire Cylinder Lock - 43020-65

Cisa - 20780 Recessed Silver Fire Cylinder Lock - 43020-65

CISA Fire lock with doorknob tongue and unlock language
Used in fireproof doors
The central language (pomolo language) is opened using the key or doorknob
The two up & down tongues (lock language) open and close only using the key
Locking tongues and pomolar language with anti-burglary features
If it is locked (the 2 tongues are closed), you will need to unlock with the key
if it is not locked you can open it using the key or doorknob
The cylinder is NOT included in the package. You will have to order it separately
Oval plate. 
Lock face width: 24mm. 
Face length: 235mm