N.Y. Multiple Dwelling Law Section 51-A
Peepholes

50
Entrance halls 50‑A
Entrances: doors, locks and intercommunication systems 50‑C
Rights of tenants to operate and maintain a lobby attendant service 51
Shafts, elevators and dumbwaiters 51‑A
Peepholes 51‑B
Mirrors in connection with self-service elevators 51‑C
Rights of tenants to install and maintain locks in certain entrance doors 52
Stairs 53
Fire-escapes 54
Cellar entrance 55
Wainscoting 56
Frame buildings and extensions 57
Bells 58
Incombustible materials 59
Bakeries and fat boiling 60
Motor vehicle storage 61
Business uses 62
Parapets, guard railings and wires 63
Sub-curb uses 64
Lighting 65
Boiler rooms 66
Lodging houses 67
Hotels and certain other class A and class B dwellings 68
Smoke detecting devices