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Cluster Box Units - 16 Door Cluster Mailboxes

Cluster box units or CBUs come in 16-door cluster mailbox units. These cluster mailboxes come in various finishes and options. offers the largest selection of home mailboxes and commercial mailboxes. Feel free to contact us for any questions you may have. A product expert is ready to help you find the cluster box unit that's perfect for your requirements.

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    Volume Discounts Available
    Free Shipping!
    Volume Discounts Available
    Free Shipping!
    Volume Discounts Available
    Free Shipping!
    Volume Discounts Available
    Free Shipping!
    Volume Discounts Available
    Free Shipping!
    Volume Discounts Available
    Have a question about this product?
    Question: Do you have a 16 Door High Security CBU in Dark Bronze?
    Answer: Yes, please view our 16 Door High Security CBU Dark Bronze for more details. Thank you.

    Question: What does high security mean?
    Answer: Different features have been reinforced to make this box more secure and tamper resistent.

    Question: Do you sell a 16 box cluster with 16 boxes of equal size (no parcel boxes)?
    Answer: Yes, but you will need postal approval due to current regulations that state 1 parcel per 10 tenants. See our 16 Door 4C Pedestal Mailbox - 3409D-16 for product details.

    Question: What do you have for prefabricated bases? I need to set it on something and I don't want to pour concrete. Thanks
    Answer: Unit requires a concrete slab for installation. It is regulated by USPS.

    Question: Can I get addresses on each slot? i.e. 9500, 9502, 9504, 9508, 9510, 9512, 9514, 9516, 9520, 9522, 9524, 9526, 9530, 9532, 9534, 9536
    Answer: Yes, each door can be labeled accordingly with a custom placard or door engraving.

    Question: does each mail box have a different key? for private use.. We need make sure other tenant can not access to other boxes- Thanks
    Answer: Each lock comes with 3 keys. Every lock is keyed differently for privacy.

    Question: are these available without parcel lockers
    Answer: Here is the sku for the 16 door with no parcels- WL-3409D-16SANBM

    Question: I would like pricing on outdoor cluster mail boxs for a group of 60 condos - three or four clusters
    Answer: Please fill out the bulk quote form on our website. Thanks

    Question: In the process of developing a (salt) waterfront property. I need your recommendation on mailboxes for approx. 80 homes.
    Answer: Hi there. Assuming the mailboxes will be outdoor and pedestal mounted, I would recommend one of our Cluster Mailboxes. Note that the 8, 12, 13 and 16 door boxes are pre-approved by the USPS. However, there are pedestal boxes that have up to 29 doors that can be used if you receive local Postmaster Approval (see your local Post Office).

    Question: What is the width and height of this 16 door unit?
    Answer: The overall dimensions for this unit are 62"H x 30-1/2"W x 17-7/8"D. Please view the product details (click link) for the exact dimensions of the doors and parcel lockers. Thanks.

    Question: Is 16 door the largest cluster box you have?
    Answer: No, other configurations can be found here: 4C Pedestal Units

    Question: Do you install mailboxes?
    Answer: No we do not do installs.

    Question: Do you customize cluster mailboxes to the size and number of boxes needed?
    Answer: There are many different configurations for the size and number of doors to choose from for the CBUs. Here is a link to the Standard CBUs. If you are unable to find the correct configuration under the standard options, you may choose from the 4C Pedestal Units. Please be aware that while all the Standard CBUs are pre-approved by the USPS, the 4C Pedestal Units will require approval from your local Post Office prior to installing.

    Question: Can I get numbers 33-48?
    Answer: Yes, you can. Just type in the numbers you need under Door Text in the options when you place the order.

    Question: I need to order 2 of the 16 door CBU Mailbox. Would you perform the delivery as well as the install? Are there any regulations that I need to be aware of regarding local mailbox ordinances?
    Answer: The product ships directly from the manufacturer. We do not have any installation teams. We sale product nationwide. You should contact your local post office for specific regulations.

    Question: I Need 18 box plus 2 parcel free standing
    Answer: Here is the SKU:WL-3415D-18BM

    Question: How many qualify for a volume discount? Also, what is the shipping cost and delivery time from Houston, TX
    Answer: Two or more units will give you a bulk discount.

    Question: We purchased a 16 door cluster box back in April and one of the users lost all three keys. What is the process to get new keys for them?
    Answer: The only solution would be to install a new lock. Please click the following link to view the Lock Replacement. Thank you.

    16 Door CBU Mailboxes
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