The USPS first studied various factors like mail size, the volume of mail received, the mail delivery system efficiency, and other things such as mail theft and vandalism. These factors, along with forecasting the future needs of efficient mail delivery, helped the USPS to create an Apartment Consensus Committee. The committee reviewed the findings in order to make more informed decisions about community mailboxes. This committee included representation from mailbox manufacturers like Auth Florence Manufacturing, plus mailbox service providers, resellers, property management companies, owners, and members of the USPS. Following a year of meetings and discussions, the committee agreed on a set of new mailbox requirements. These STD-4C regulations are now mandatory for centralized mail delivery systems serviced by the USPS.