Salsbury CBU mail compartment sizes are 12” W x 3” H x 15” D, 12” W x 4-3/4” H x 15” D, or 12” W x 6-1/2” H x 15” D depending on which door size you select. They also include 1, 2, or 4 fully integrated parcel locker(s): Regular (12” W x 10” H) and Large (12” W x 13-1/2” H). Outdoor Parcel Lockers include 2 or 4 front loading 12” W x 19-3/4” H x 15” D parcel lockers.

According to USPS regulations, the property owners, builders, or developers are responsible for cluster mailboxes. The USPS’s Postal Operations Manual states, “Purchase, installation, and maintenance of mail receptacles are the responsibility of the customer.”

Salsbury’s durable and corrosion-resistant CBU’s are constructed of heavy-duty aluminum and stainless steel hardware with a powder coated finish that will stand up well to harsh weather conditions. One compartment in each Salsbury CBU mailbox is labeled “Outgoing Mail” and includes a weather protection flap.

It is a lot more efficient for a mail carrier to deliver mail to one centralized location instead of delivering from house to house. Consequently, CBU’s provide the USPS with both time savings and significant fuel-efficiency on their postal vehicles. With CBU’s, the USPS also reduces labor costs as each mail carrier will be able to more efficiently deliver their mail. Cluster mailboxes are more secure than individual curbside mailboxes. Multiple safety features protect against mail theft. Each tenant is assigned a mail compartment that is secured with a heavy-duty cam. An anti-fish plate on the rear of the outgoing mail slot helps block the tampering of mail.

Centralized mail delivery is a mail delivery system in which the mail carrier delivers mail for multiple residences at one central location.

Salsbury Industries’ 3300 Series Cluster Box Units and 3300R Series Regency Decorative cluster mailboxes include mailboxes and lockers that fall within ADA height requirements.

A parcel locker is a lockable compartment designed to hold packages that will not fit in a standard mailbox compartment.

Parcel lockers are included with cluster box units, either alongside them or integrated. When a mail carrier is unable to fit a package into a standard mailbox compartment, they will place your package in a parcel locker. The carrier will then leave the key to the parcel locker in your mailbox. (If you look up the USPS tracking number for your package online, you will see a message “Delivered to Parcel Locker” when your delivery arrives.) To get your package out of the parcel locker, you simply need to use the key the mail carrier has left in your mailbox to unlock the parcel locker. The key will have a tag that indicates which locker contains your package. Once you have unlocked the parcel locker and retrieved your package, the key capture system will secure the parcel locker key in place so that it can’t be removed. Only a USPS mail carrier will be able to remove the key with a master key. If you’re still unsure of how parcel lockers work, consult this helpful video.

This short video will take you through each step in the process of installing a cluster mailbox, showing you exactly what you need to do. It also provides a list of the tools you will need. After you’ve installed your cluster mailbox, you should get in touch with your local Postal Authority to get the master arrow lock installed.

Salsbury CBU mail compartments are available with “A” size doors (12-3/4” W x 3-1/4” H), “B” size doors (12-3/4” W x 5” H), and “C” size doors (12-3/4” W x 6-3/4” H).

Salsbury CBU’s come in several colors to choose from—black, bronze, gray, green, sandstone, and white. Other customizable options include custom engraved placards and custom engraved doors (regular or black filled). For a Standard CBU or a 3304 series Outdoor Parcel Locker, you can select a Regency CBU decorative top and a Regency CBU decorative pedestal cover.