4C Horizontal Mailbox – 7 Door High Unit (27 Inches) – Double Column – 12 MB1 Doors – Sandstone – Front Loading – USPS Access


USPS Approved Cluster Box Units – All cluster mailboxes sold by Mailbox Emporium are approved by the USPS and considered the industry standard for outdoor, centralized mail delivery.
Superior Strength – High Security – Exceptional Durability

Original price was: $1,099.00.Current price is: $779.00.

Item#: 3707D-12



SAVE $320 (Reg. $1,099)


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Product Description

3700 Series 4C Horizontal Mailboxes – Front Loading – U.S.P.S. Access

Dimensions: 31.125″ W x 27″ H x 17″ D

Weight: 100 lbs


  • 4C horizontal mailboxes are U.S.P.S. Approved
  • Manufactured by Salsbury Industries to USPS-STD-4C Specifications
  • Ideal for apartments, commercial buildings and residential developments
  • Required for new construction and major renovations
  • U.S.P.S. standard 4C requires a minimum of 1 parcel locker for every 10 tenant compartments
  • Parcel lockers must be a minimum of 15″ H to meet the 1:10 ratio. Once this ratio has been met, smaller parcel lockers may also be added
  • Fully integrated and stand-alone parcel lockers are available in varying sizes: PL3 (10-1/4″ H), PL4 (13-3/4″ H), PL4.5 (15-1/2″ H), PL5 (17-1/4″ H) and PL6 (20-3/4″ H)
  • For indoor or outdoor use
  • Constructed of heavy duty aluminum and stainless steel hardware
  • Feature a durable powder coated finish available in aluminum, bronze, gold and sandstone
  • Doors include a heavy duty cam lock with a dust/rain shield and 3 keys
  • MB1 doors are 13-1/4” W x 3-1/4” H, MB2 doors are 13-1/4″ W x 6-3/4″ H, MB3 doors are 13-1/4″ W x 10-1/4″ H and MB4 doors are 13-1/4″ W x 13-3/4″ H
  • Available in three (3) MB1 equivalent door high units to fifteen (15) MB1 door high units. The popular maximum high (56-3/4”H) units are also available
  • ADA compliance guidelines
  • Available in configurations that are 1 door wide (single column) and 2 doors wide (double column)
  • Fully integrated and stand-alone parcel lockers are available in 5 MB1 door heights (PL5 – 17-1/4″ high) and 6 MB1 door heights (PL6 – 20-3/4″ high)
  • A compartment equivalent to two 3-1/4″ high standard doors is used for outgoing mail collection and is labeled “Outgoing Mail”
  • Outgoing mail compartment / carrier access door includes the U.S.P.S. master lock access door (lock installed by the U.S.P.S.) and cannot be used for mail distribution
  • Outgoing mail compartment includes a 10-3/4″ W x 3/4″ H mail slot and weather protection hood
  • Include factory installed 3/4″ W x 1/4″ D trim and a solid rear cover
  • Salsbury Industries is an ISO 9001: 2008 certified company and has excelled in the field of manufacturing since 1936

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