Vivotek AM-51D

Vivotek - Adaptor Plate for 4" electrical octagon box & single gang box, Supported Models: FD8167A, FD8169A, FD8177-H, FD8179-H, FD8367A-V, FD8369A-V, FD8377-HV, FD8379-HV, FD9189-H(M)(T), FD9389-(E)H(M)(T)V.