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S  E  C  U  R  I  T  Y

CBU Classic 5000
Private Use Cluster Box Unit

Outdoor centralized mail delivery system is constructed of all aluminum, stainless steel and corrosion resistant materials.  Concealed hinges on front-loading master doors provide high security plus easy access for mail delivery person. 

SMC Products
Cluster Box Units
4C & Horizontal
Postal Specialty
Private Mailbox
Secure Locking Mailbox
Vertical Mailbox

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 Product Info

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Overall Sizes

62" x 30 x 17
1575mm x 781 x 432

w/o base Type I, Type II
31" x 30 x 17
787mm x 781 x 432

w/o base Type III, Type IV
45 x 30 x 17
1143mm x 781 x 431

Compartment Sizes

Type I, Type II, Type III
3" x 12 x 16
77mm x 305 x 407

Type IV
4" x 12 x 16
121mm x 305 x 407

Parcel Openings

Parcel A:

10" x 12

 254mm x 305

Parcel B: Type I and Type III

14 x 12

 343mm x 305


powder coat

silver powder coat
powder coat
  gold powder finish
powder finish
bronze powder coat
powder coat


  • Doors are designed to stay open while mail is distributed with a quick release for closing.
  • Shelves are secured with stainless steel rivets for strength and stability. 
  • All patron doors are equipped with weather resistant 5-pin cylinder cam locks (1500 changes) and 3 keys.
  • Parcel boxes have captive locks. 
  • Standard door identification is a 1" x 1" aluminum tab with black numbers. 
  • Tab recesses into an indentation in the surface of the door for a smooth attractive finish.


Doors: Thicker doors constructed of extruded aluminum

  • Master Door Frame: Precision fit for sturdier construction

Shelves: Riveted with stainless steel rivets to offer added protection

Concealed Hinges: For longer life, improved performance and appearance

Pedestal: Extruded aluminum to withstand the toughest impact.

Interior Nest: Thicker material .080 aluminum to strengthen overall unit

Door ID: An aluminum tab with black number: 1" H x 1 W


  • Standard aluminum numbers from 1 through 999 for consecutive numbering of multiple units
  • Permanent identification engraved into front surface of patron doors
  • Extruded aluminum pedestal

New Security Features for Type I:

  • 8 point master door locking system
  • " thick aluminum collection door
  • " thick aluminum parcel doors with stainless steel hinges
  • Patron doors with enclosed ends at hinge point with a 3/16" hinge rod
  • Reinforced top cover
  • Stronger load door holding mechanisms
  • Load doors hinged with stainless steel continuous hinges with a " rod
  • Hook cams on 306P lock
  • Hook cams on patron doors
  • Pry resistant parcel openings
  • Heavy gauge (11GA. 304 Series Stainless Steel) rain cover on collection door
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[Contact Sales Team]

  Security Manufacturing Corp.
   700 Freeport Pky Ste 300, Coppell, TX  75019 
   Tel: 800-POBOXES - (800-762-6937)