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Internet # 203552385

Model # 4350SLV

4300 Series Mail Chest in Silver

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  • Durable, powder-coated aluminum construction
  • USPS approved; made to USPS-STD-7B specifications
  • Master postal lock not required
  • View More Details
Free & Easy Returns In Store or Online
Return this item within 90 days of purchase. Read Return Policy

Product Details

About This Product

Salsbury 4300 Series mail chests are USPS approved and made entirely of aluminum with a tough, powder-coated finish. The mail chests feature both front and rear access locking doors, and mail is deposited through a non-locking access panel on the front. Each unit includes an outgoing mail tray, a lock with two keys on each door (keyed alike) and an adjustable red signal flag. They can be mounted on the optional pedestal (sold separately), in columns, masonry or walls. These mail chests are USPS approved for curbside mail delivery.


  • Mail chests are USPS approved; master postal lock not required
  • Manufactured by Salsbury Industries to USPS-STD-7B specifications
  • Made entirely of aluminum
  • Durable, powder-coated finish
  • Includes an outgoing mail tray and an adjustable red signal flag
  • Front and rear access locking doors with two keys for each door (keyed alike)
  • Mail is deposited through a non-locking access panel on the front and includes an outgoing mail tray
  • Order pedestal separately
  • Ideal for homes, colleges, schools, office buildings, military bases and many other applications
  • Return Policy

Product Information

Internet # 203552385

Model # 4350SLV


Dimensions: H 17.25 in, W 14.375 in, D 23.0 in


Assembled Depth (in.)

23.0 in

Assembled Height (in.)

17.25 in

Assembled Width (in.)

14.375 in


Access Type


Assembly Required




Color Family



Outgoing Mail Indicator

Hardware Color Family



Flags, Handles, Keys, Outgoing Mail Slot/Receptacle

Mailbox Capacity (cu. in.)


Mailbox Size

Extra Large

Mailbox Style




Mount Type

Post Mount

Product Weight (lb.)

50 lb





Warranty / Certifications

Manufacturer Warranty

Three (3) Year Limited

U.S. Postmaster General Approved


Questions & Answers

Q:If you choose to leave mailbox unlocked will the door stay closed?
by|Sep 27, 2020
1 Answer
Answer This Question

A:  Hello, the mailbox will need to be locked to stay closed. I hope this information is helpful. Thank you.

by|Sep 28, 2020
    Q:Why doesn't the manufacturer or Home Depot list the size of the parcel/package that this mailbox accepts?
    by|Dec 28, 2019
    1 Answer
    Answer This Question

    A:  Bob, The Mail Deposit portion of the item which would hold parcel boxes the size is 11'' W x 2 "H for any further technical question you may partner with 1-800-624-5269 (CST)

    by|Dec 29, 2019
    Q:Does anyone know if 1) the incoming mail slot will take the larger priority mail envelopes - I think they are 10x14 and 2) can the outgoing mail shelf be removed to provide more clearance for puttinb in "fatter" envelopes or is the size limited anyway by the shute into the locked portion?
    by|Sep 26, 2019
    1 Answer
    Answer This Question

    A:  Hello, The incoming mail slot is 11"W x 2" H and the out going mail slot is 11"W x 2-3/4' H. I hope this information was helpful.

    by|Sep 26, 2019
      Showing 1-3 of 3

      Customer Reviews

      4.5 out of 5

      • 4.5 out of 4 reviews
      • 100% recommend this product
      Filter by:
      Showing 1-4 of 4 reviews
      This locking mailbox is perfect for our Township mail. The outgoing mail tray is wonderful. Now we can mail out larger envelopes. Our smaller mailbox had a "clip" for outgoing mail, so when you closed it, a larger envelope would extend outside the box when closed. This one with the inside shelf to hold outgoing mail is perfect!
      • Verified Purchase
      • Verified Purchase
      • Recommended
      Had to return it, the back door would not open....
      Had to return it, the back door would not open.
      • Verified Purchase
      2 found this review helpful
      Met my expectation, plenty of room so I do not...
      Met my expectation, plenty of room so I do not have to pick up mail every day.so far so good.
      This review is from 4300 Series Mail Chest in White
      • Verified Purchase
      Showing 1-4 of 4 reviews