Free-Standing 4C Double-Column Mailbox, 11-Door High, Sandstone
Durable Salsbury 4C free-standing mailbox system pairs a USPS-approved horizontal mailbox with a matching enclosure for locations without wall-mount capability. Built from heavy-duty aluminum with stainless steel hardware and a powder-coated sandstone finish for indoor or outdoor use.
Key Features:
- USPS-Approved Access: Front-loading design with carrier access door for USPS master lock (installed by USPS).
- Rugged Construction: Heavy-duty aluminum body, stainless hardware, powder-coated sandstone finish for weather resistance.
- Secure Compartments: Individually numbered doors with heavy-duty cam locks and dust/rain shields; anti-fish plate on outgoing slot.
- Convenient Mail Handling: Integrated outgoing mail slot with weather hood; includes enclosure for free-standing installs.
- Multi-Unit Capacity: Double-column, 11-door-high configuration ideal for apartments, offices, and residential developments.
Please check the Product Data Sheet Here
Specifications Table:
| Specification | Details |
| Series | Salsbury 3900 Series Free-Standing 4C Horizontal Mailboxes |
| Configuration | Double column, 11 door high (includes 3711D-20 mailbox and 3911D enclosure) |
| Overall Dimensions | 31.75 in. W x 69.375 in. H x 18.5 in. D |
| Material | Heavy-duty aluminum with stainless steel hardware |
| Finish | Powder coated, Sandstone |
| Loading/Access | Front loading; accessed via 1 or 2 master door panels |
| Door Locks | Heavy duty cam locks with dust/rain shield; 3 keys per door |
| Outgoing Mail | Outgoing mail compartment with 11-3/4 in. W x 3/4 in. H slot and weather protection hood; anti-fish plate |
| USPS Compliance | USPS approved 4C; outgoing door includes USPS master lock access (installed by USPS) |
| Door Sizes | MB1 doors: 3-1/4 in. H x 12-3/4 in. W; MB2: 6-3/4 in. H x 12-3/4 in. W; MB3: 10-1/4 in. H x 12-3/4 in. W; MB4: 13-3/4 in. H x 12-3/4 in. W |
| Use | Indoor or outdoor |
| Compliance | ADA height compliant units available |
| Weight | 225 lbs |
Frequently Asked Questions (FAQ):
Q: Is this unit USPS approved and front loading?
A: Yes. It is a USPS-approved 4C horizontal mailbox accessed from the front with master door panels.
Q: Can it be installed outdoors?
A: Yes, the powder-coated aluminum construction and stainless hardware support indoor or outdoor use.
Q: What are the overall dimensions?
A: Approximately 31.75 in. W x 69.375 in. H x 18.5 in. D.
Q: Does it include an outgoing mail slot?
A: Yes, it includes an outgoing mail compartment with a mail slot and weather protection hood.
Q: What locks are included?
A: Each door has a heavy-duty cam lock with dust/rain shield and 3 keys; USPS installs the master arrow lock for carrier access.
Streamlined Mail Center, Effortlessly Elegant
This sandstone mailbox tower anchors a lobby with a refined, architectural presence. The double-column grid and crisp powder-coated finish create order and rhythm, elevating everyday mail routines. Pair it with warm wood wall panels and matte black signage for a modern, hospitality-inspired entry. Its a functional sculpturesecurity-forward and indispensable to elevated multifamily living.
Upgrade your lobby with this secure, USPS-approved free-standing 4C mailbox to streamline deliveries with lasting style.
Installation
