Home Forums General Discussion Technical Questions Access key for a Montgomery elevator

Hi elmcannic,

Thanks for your help,

As far as I know there is two series of Montgomery keys, the A series and newer MK series, both of which are double cut keys. Is there another one I don't know about? This fixture on the pictures is a single cut cylinder and a Yale key fits perfectly in it. Do you have any other ideas?

The elevator is from the 90s.