Simpson RPBZ Retrofit Post Base is perfect for reinforcing an existing post, or as an alternative solution for securing a new post connection, with the addition of the Simpson CPS 1" Composite Plastic Standoff Base. If the existing post is in a corner, simply install a single Simpson RPBZ retrofit post base. If the post is far enough away from existing edges or structures, install two for an extremely strong post connection that resists both seismic and wind forces. With Simpson's patented ZMAX finish, the RPBZ will come standard with a high level of corrosion resistance. Pair the Simpson RPBZ Retrofit Post Base with Simpson SDS Connector Screws (sold separately) for optimal holding strength.