SKU: 74517956137

Salsbury 3800 Horizontal Series 9-Compartment Surface Mount Mailbox, Single Column

Sale price$858.72 Regular price$954.13
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Description

Salsbury 3800 Horizontal Series 9-Compartment Surface Mount Mailbox, Single Column9 compartment surface mounted 4C horizontal mailbox Durable 4C horizontal mailbox system designed for surface mounting where recessed installation isnt possible. Constructed of heavy duty aluminum with stainless steel hardware for indoor or outdoor use, it includes 9 tenant compartments, an outgoing mail slot, and an integrated parcel locker. Key Features: Surface Mount Convenience: Installs with included enclosure when wall depth wont allow recessing

9-compartment surface-mounted 4C horizontal mailbox

Durable 4C horizontal mailbox system designed for surface mounting where recessed installation isn’t possible. Constructed of heavy-duty aluminum with stainless steel hardware for indoor or outdoor use, it includes 9 tenant compartments, an outgoing mail slot, and an integrated parcel locker.


Key Features:

  • Surface-Mount Convenience: Installs with included enclosure when wall depth won’t allow recessing
  • Heavy-Duty Build: All-aluminum construction with stainless steel hardware for long-lasting, weather-resistant performance
  • Secure Access: Front-loading design with heavy-duty cam locks and USPS master lock access door
  • Organized Delivery: 9 individually numbered MB1 doors plus outgoing mail slot and fully integrated parcel locker (PL4.5)
  • Code-Compliant Design: Meets USPS 4C requirements; suitable for apartments, commercial buildings, and residential developments

Please check the Product Data Sheet Here


Specifications Table:

Specification Details
Series 3800 Series 4C Horizontal Mailboxes
Mounting Surface mounted with matching enclosure
Loading/Access Front loading; USPS master lock access door
Tenant Doors 9 compartments (MB1 size: 3-1/4 in H x 12-3/4 in W)
Parcel Locker 1 integrated PL4.5 (15-1/2 in H)
Outgoing Mail Mail slot 11-3/4 in W x 3/4 in H with weather protection hood; anti-fish plate
Construction Heavy-duty aluminum with stainless steel hardware
Finish Options Powder coated: aluminum, bronze, sandstone, black
Dimensions 17.75 in W x 57.75 in H x 17 in D (maximum height unit, single column)
Use Indoor or outdoor
Compliance Meets USPS 4C requirements; ADA height compliant units available

Frequently Asked Questions (FAQ):

Q: Is this unit USPS approved?
A: Yes. It’s a USPS-approved 4C horizontal mailbox with a carrier access door for a USPS-provided master arrow lock.


Q: How many tenant compartments are included?
A: Nine MB1 tenant doors are included, plus an outgoing mail slot and an integrated parcel locker.


Q: Can it be installed outdoors?
A: Yes. The aluminum construction and powder-coated finish are suitable for indoor or outdoor installations.


Q: What are the overall dimensions?
A: Approximately 17.75 in W x 57.75 in H x 17 in D for the surface-mounted enclosure.


Q: Does it include locks and keys for tenant doors?
A: Yes. Doors include heavy-duty cam locks with a dust/rain shield and come with 3 keys per door.


Streamlined Mailroom Elegance

This sleek aluminum mailbox column brings a disciplined rhythm to common areas, turning mail delivery into a refined daily ritual. The slim profile and numbered doors create a clean, architectural grid, while the integrated parcel locker is a discreet modern luxury. Pair it with monochrome walls and brushed hardware to echo its polished, utilitarian beauty. It’s a smart, timeless fixture that elevates multifamily and commercial corridors alike.


Upgrade your property’s mail center with this secure, surface-mounted 4C mailbox—built to install easily and perform for years.

Installation

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 74517956137

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4.8 ★★★★★
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Oliver JM
Cuba, US
★★★★★ 5
Sturdy - Easily Adjustable - Works as Advertised
I modified it to fit a small subwoofer under my desk. I flipped the arms, inverted them and screwed it on to the desk. Not the intended use, but it solved my issue perfectly. It's really sturdy, it'll be perfect for mini PC's.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 13, 2026
K
Verified Purchase
Kaleb
Louisville, US
★★★★★ 5
Perfect for mounting subs!
Love it. Mounted my subwoofer under desk with it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
A
Verified Purchase
Amazon Customer
Omaha, US
★★★★★ 5
Flexibility and clean desk space!!!
Bought three of these for my home office. Two for Synology NAS drives and one for a Mac Studio. The size ranges make this the perfect product to get everything off my desk. A little difficult to install with the desk upright so I suggest turning it on its side or over completely. In my case, I have these in sit stand desks which is great.
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Reviewed in the United States on December 24, 2025
W
Verified Purchase
William Lech
Phoenix, US
★★★★★ 4
Decent bracket, Non-beveled screw holes cause complications
The screws that secure the mount to the underside of the desk stick out enough to cause the inner dimensions to change. I had to use the next hole down to increase the size of the bracket to accommodate my device, resulting in a less secure mount than desired. If the holes were beveled so that the screws fit more flush with the mount I'd be able to give it 5 stars. But the inner dimensions are not entirely as advertised due to the screws. Quality is up to standard otherwise, installation is relatively straightforward, price point is fine for a bracket of this size.
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Reviewed in the United States on September 18, 2025
K
Verified Purchase
Kris
Grantham, US
★★★★★ 5
Great mount!
Great under desk NAS mount. Adjustable and sturdy, easy to install. Worked well for my Qnap TR-004 four slot DAS. I used 5/64 drill bit for the holes. Since my desk has a rear lip I reused rear stopper bit as a headphone hanger. I bend it slightly to a hook shape.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2025

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