The Old Style with Pins and New Style with Teeth are not interchangeable

This Lock Case is only used o Current Styles, Can not be used on older Roto Locks.
 
New style Roto MP lock gearbox for current multipoint locks.
This lock has alligator teeth at the top and bottom for easy connection to upper and lower extensions
Please note that old-style locks have pins - See additional Pictures

Faceplate Width: 5/8 inch (16 mm)
Faceplate Length: 15-3/4 inch (400 mm)
Backset: 1-3/8 inch (35 mm)
Markings: H 35/92 1113
Markings: Roto on the faceplate
Latch: Combination of metal and Plastic

Operation: Lock
Lift handle to engage locking devices and extend deadbolt
Turn cylinder thumb turn or Key to secure door in locked position.

Operation: Unlock
Turn cylinder thumb turn or Key to unlocked door.
Depress Handle to Retract deadbolt and unlock door

To Change Handing of Spring Latch:
1. Insert small screwdriver into the round hole above the latch
2. Push down on screwdriver handle
3. Remove Latch and reverse, then push back into the lock body

SPECIAL NOTE: This Gearbox has Teeth on both ends, and the others have Pins.
Compare all features for replacement

 
How to Rehand a Roto Multipoint Lock Gear Box