7 Door Vertical Mailbox – USPS Access – Salsbury industries


4B Vertical Mailboxes are USPS approved for replacement installations. All units are available in surface-mount or recessed configurations with options for 3, 4, 5, 6, or 7 tenant doors.

Original price was: $895.00.Current price is: $869.00.

Item#: 3507



SAVE $26 (Reg. $895)


Contact Us for Bulk Pricing

In Stock
Ships in 10-14 days

Found a lower price? We will beat it!

Size: 40.75″ W x 19″ H x 7.5″ D

Weight: 45 lbs.

Salsbury 3500 Series Vertical Mailboxes – U.S.P.S. Access


  • 4B+ Vertical mailboxes are U.S.P.S. approved for replacement and/or retrofit installations
  • Manufactured by Salsbury Industries to USPS-STD-4B+ Specifications
  • Ideal for apartments, condominiums and commercial buildings
  • Made entirely of aluminum
  • Feature a durable powder coated finish available in aluminum, brass, bronze, sandstone and green
  • Mount directly to a wall and are secured with mounting hardware (not included)
  • Individual compartment size is 5-1/2″ W x 16-1/4″ H x 6-3/4″ D
  • Doors and trim are striated to resist scratching
  • Doors include a 5 pin cylinder cam lock (with 2 keys)
  • Mailboxes are available with 3 to 7 compartments
  • Salsbury Industries is an ISO 9001: 2008 certified company and has excelled in the field of manufacturing since 1936



  • Custom engraved placards
  • Outgoing 4-3/4” W x 1/2” H mail slot
  • Replacement locks
  • Additional keys
  • Key blanks

Why Shop Mailbox Emporium?


    • 5 Star Customer Service – At Mailbox Emporium, we strive to provide you with the best possible mailbox purchasing experience every time you shop with us. Check out our 5 star reviews and see why over 30,000 customers
      choose us for their mailbox needs. Have mailbox questions? No worries, we have the answers! Chat online or call one of our mailbox experts today.


    • Low Price Guarantee – Shop with confidence! We regularly check our competitors’ pricing to make sure we have the lowest prices online in the US. If you ever find a lower price from an authorized mailbox dealer,
      send it our way and we’ll beat it. Guaranteed!


    • Free & Fast Shipping – Yup, we offer that too. Free shipping is available on all products we sell in the continental United States. Many items are available to ship out in 2-3 business days.


    • Highest Quality Mailboxes – For commercial and community mailboxes, we sell only authorized Florence and Salsbury products. These two companies manufacture the highest quality mailboxes in the US and most products
      include a 5-year, worry free warranty. We are proud to sell American Made Mailboxes!


Call a Mailbox Specialist Today – 1-888-352-9194


Ted Baxter FL, United States
Great experience. Mailboxes arrived on time and in perfect condition.


Tim was very helpful and we are very happy with our new mailboxes 🙂

Tech Docs

tech_3507S– Technical Drawing (PDF)

inst_verticals – Installation Instructions (PDF)