Cluster Box Units (CBU) – The Elite Neighborhood Security CBU Mailbox

Cluster Box Units (CBU) – The Elite Neighborhood Security CBU Mailbox

and ships FREE!

C.B.U.s (Cluster Box Units)

Our CBUs (Cluster Box Units) are all custom and completely welded out of a 1/4″ steel frame with 3/16″ steel-reinforced doors. There are no rivets or spot welds, or parts that can be removed. The shell is over 3-4x thicker than the next heaviest duty CBU on the market! If you would like a quote, we need to know:

  • Number of Total CBU Units needed (Complete CBU location)?
  • One location or multiple locations available?
  • Number of Total Tenants/homes needed (individual slots)?
  • Need of Outgoing Mail?
  • Do you need Larger Package Compartments?
  • Do you need an in-Ground Post (Dirt area), OR a Surface Mount Post (An existing sidewalk)?
  • Zip code for shipping?
  • Is the delivery location a residence, OR is it a commercial address?
  • Do you have access to a forklift or a loading dock?

CBUs are very heavy and the lightest CBU will be approximately 250 lbs., and then go up from there. They also require front and rear door access — one side for the mail carrier and another for the tenants. You will need USPS approval for this setup.

Please call or email for details and options:

(800) 206-8067

mail@fortknoxmailbox.com

Additional information
Weight 250-550 lbs
Dimensions 24 × 20 × 24-42 in
CBU Specs

1/4" Cluster Box Unit (24") 250lb, Size: L-24" x W-20" x H-24"

,

1/4" Cluster Box Unit (30") 350lb, Size: L-24" x W-20" x H-30"

,

1/4" Cluster Box Unit (36") 450lb, Size: L-24" x W-20" x H-36"

,

1/4" Cluster Box Unit (42") 550lb, Size: L-24" x W-20" x H-42"

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FAQ
Shipping Options

Shipping on all products is FREE!!!

When Will Your Mailbox Ship?

We have lots of different models and options, so our inventory is always fluctuating.  We are currently very busy, and below are our average wait times.  If your mailbox is in stock, it will ship within 1-2 business days. Otherwise, here are our average wait times*:

  • 10" Mailboxes (M1-LT & Small Standard): 1-3 weeks
  • 12" Mailboxes (Large Standard and Fortress): 3-4 weeks
  • 18" Mailboxes (Vacationer & Senator): 4 weeks
  • The Package Box, Vaults & CBUs: 4-6 weeks
  • Ballot Boxes: 6-8 weeks
  • Smaller accessories ship within 2-3 days
  • Custom Colors will add 1 week to the above time frames
  • Extra keys can take 10-12 days for delivery
  • FedEx Ground transportation: 1-5 Business Days
  • Freight transportation: 1-9 Business Days

*Larger quantities or custom orders will take longer.  Feel free to contact us with a more precise shipping date.Â