French Door With Windows in multi-family ??

[Melissa Steinour]

Hi - I just purchased an under/over duplex that was previously a duplex (years ago), used as single family last and we are turning it back to a duplex. The doors that were taking off are still available to turn it back into a duplex.

The are exterior doors on the side of house for both units. However entering in the front door will now be a common area. Tennant B would go up the steps to enter their apartment. Tennant A would go into a door to the right and enter their living room but the door we have for that one is a french style door with windows. I cannot find anything to say in Pennsylvania what the code is for this. However, I am wondering if we should put a solid door there for tenant privacy/security or would it be appropriate to use the french style doors, put locks on them & just blackout or frost the windows so tenant B cannot see into tenant A's apartment when entering the common foyer through the front door? Any thoughts on this?