subject: 4b+ Std. Horizontal And 4c Std. Horizontal Mailboxes [print this page] Business Oriented mailboxes must satisfy precise standards in order for the United States Post Office to accept them for use as mail receptacles. You're not authorized to pay money for just any sort of mail receptacle; what you use has to be approved by the post office or they're not going to use the receptacle for storage of the mail.
This will cause the inconvenience of someone from your corporation having to pick up the mail at the post office until you switch your unapproved horizontal mailboxes with an item which fits within the 4B or 4C standard postal regulations for commercial horizontal mailboxes.
Do not make the blunder of believing you can create your own set of horizontal mailboxes for your commercial building in an effort to save on the cost of purchasing something that meets the approval of the postal service in your city. While you won't notice any specific regulations that forward commercial or residential customers from constructing their own mail receptacles, you must be sure to contact the post master and obtain approval before you are permitted to use them to gather your mail.
Before you even think about spending money on something that might not meet regulations, contact the Postmaster to check on the current guidelines in place. For instance, the 4C regulations that went into effect in January 2007 required larger compartments than previous standards-almost double the previous size in fact.
You have to ensure you follow the postal standards that include the requirement for commercial horizontal mailboxes to be designed for both indoor and outdoor use. While we normally think of these varieties of mailboxes as something you will find in the lobby or large multi-company office buildings, this is simply not always the case.
You will also find them in one convenient location that houses companies within an industrial park and typically on the grounds of a multi-family residential facility. It is for these causes that the post office has modified the standards for commercial horizontal mailboxes and added standards for an increase in the size and quality of the security features.
