I own a SubZero 500-series refrigerator. Can I replace it with the new SubZero Bi-series?
Yes.
However, if you have panels on the 500-series they won’t fit.
Also the 500-series were 83″ tall. The new Bi-Series ships at 84″ in height. However there is a grille accessory that can change the height into 83″. Make sure to ask for this.