CONSIDERATIONS:

1. Application
   • Multiple cell doors
   • Individual corridor door
2. Location of door(s)
   • Interior
   • Exterior
3. Overall number of doors to be controlled
4. Door type/size/weight
5. Wall type
   • Masonry
   • Concrete
   • Plate
6. Drive type
   • Chain
   • Rack and pinion
   • Manual
7. Control Required
   • Mechanical
     1. Mechanical at the door
     2. Mechanical remote gang unlocking
   • Electrical
     1. Electrical at the door
     2. Electrical remote
     3. Electrical inmate
   • Customized system
   • Control Location
     1. Adjacent to door
     2. End of cell run
     3. Remote control room
8. Optional features required
   • Front release column
   • Key switch operation
   • Mechanical release system
   • wire harness
     (2B, 3B, KR)
   • Deadlock-open feature
     (2B, KR, DKR)
   • Three light indication
   • (2B, KR)

DRIVE SYSTEM SELECTION:
Folger Adam markets locking devices and operators with a variety of dependable drive systems to suit a range of applications and user preferences. The following considerations will assist in determining which will best meet your requirements.

CONSTRUCTION VARIABLES:
Even in high quality structures, uneven wall construction is a possibility. Installed on such a wall, a roller chain device or operator tends to compensate for minor construction irregularities, and will not bind or wear unevenly.

DOOR FORCE ADJUSTMENT:
Roller chain devices, such as Type 2B, D2B and D5B, have an adjustable torque limiter which may be used to adjust operating force to the specific opening.