20 Door Front Loading 3620 Salsbury 4B+ Horizontal Mailboxes

3620 Front Loading Salsbury Horizontal Mailboxes
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  • Retail Price: $1,119.92
  • Our Price: $973.84
  • Free Shipping
  • No tax outside IL
  • In Stock
  • Ships in 3-5 Days.
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  • Salsbury 20 Door 4B+ horizontal style commercial mailboxes are ideal for apartments, condominiums, office buildings, military bases and residential developments.
  • Made entirely of aluminum, 3600 series 4B+ horizontal mailboxes are U.S.P.S. approved and available as front loading units or rear loading units.
  • Each aluminum door includes a 5 pin cylinder cam lock with 2 keys and a clear plastic card holder to identify the tenant’s name and/or box number.
  • Upgrade your horizontal mailboxes with engraving on the doors.
  • The A sized doors on this mailbox are 6-1/2″ W x 5-1/4″ H.
  • Salsbury 4B+ standard horizontal mailboxes feature a durable powder coated finish available in 4 contemporary colors
  • This horizontal commercial mailbox unit has 19 usuable doors with one mailbox opening required for a master postal or commercial lock and cannot be used for mail distribution.
  • The master access door panel swings on a continuous hinge
  • Theses horizontal mailbox units include factory installed 3/4″ W x 1/4″ D trim and a solid rear cover.
  • The 3600 series 4B+ horizontal mailboxes have been U.S.P.S. approved to the required security upgrades of USPS-STD-4B+. 4B+ horizontal mailboxes are approved for replacement and/or retrofit installations effective October 2006.
  • View more commercial mailboxes or the rest of our horizontal mailboxes
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    Mailbox Door #3

    Master Door

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Product Details


Item Height (inches) Width (inches) Depth (inches)
Overall with Trim 29.75" 29.25" 16.5"
Compartments 5.25" 6.5" 15"


  • Mailbox Item Number: SIH3620
  • Includes: Mailbox, 2 Keys per Door
  • Manufacturer: Salsbury Industries
  • Shipping Weight: 65 lbs.
  • Locking: Locking mailbox.

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