For secure and convenient 2026 mail delivery, consider Salsbury’s top cluster boxes: the 8-Door Gray with heavy-duty locks and parcel lockers; the USPS Access 8-Door featuring a Type VI USPS-approved design; the large 28-Door aluminum model offering USPS-STD-4B+ compliance; the 4-Door green Regency-style unit with sturdy weather protection; the 12-Door Gray with outgoing mail slot and 5-year warranty; and the 8-Door USPS Type I. These durable, weather-resistant units meet USPS standards and simplify community mail access—you’ll find customized details to fit your needs.
| Salsbury Industries 8-Door Gray Cluster Box Unit |
| Reliable Standard | Number of Doors: 8 A-size doors | Parcel Lockers Included: 2 parcel lockers (1 small, 1 large) | Material: Heavy-duty aluminum body with stainless steel hardware | VIEW LATEST PRICE | Read Our Analysis |
| Salsbury Industries 8-Door USPS Access Cluster Box |
| Heavy-Duty Security | Number of Doors: 8 A-size doors | Parcel Lockers Included: 4 fully integrated parcel lockers | Material: Welded heavy-gauge aluminum body with stainless-steel hardware | VIEW LATEST PRICE | Read Our Analysis |
| Salsbury 3628AFU 28-Door Horizontal Mailbox Aluminum |
| High Capacity | Number of Doors: 28 A-size doors (27 usable) | Parcel Lockers Included: Not specified parcel lockers | Material: Aluminum with durable powder coat finish | VIEW LATEST PRICE | Read Our Analysis |
| Salsbury Industries 3305GRN-U 4-Door USPS Cluster Box |
| Decorative Style | Number of Doors: 4 C-size doors | Parcel Lockers Included: 2 fully integrated parcel lockers | Material: Welded heavy-gauge aluminum with stainless steel hardware | VIEW LATEST PRICE | Read Our Analysis |
| Salsbury 12-Door Gray Cluster Box Unit Mailbox |
| Spacious & Durable | Number of Doors: 12 A-size doors | Parcel Lockers Included: 1 parcel locker | Material: Heavy-duty aluminum with stainless steel hardware | VIEW LATEST PRICE | Read Our Analysis |
| Salsbury 8-Door USPS Type I Cluster Box Unit |
| Classic Black Finish | Number of Doors: 8 A-size doors | Parcel Lockers Included: 2 parcel lockers (1 small, 1 large) | Material: Heavy-duty aluminum body with stainless steel hardware | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
Salsbury Industries 8-Door Gray Cluster Box Unit
Should you need a reliable and secure solution for centralized mail delivery, the Salsbury Industries 8-Door Gray Cluster Box Unit is a smart choice. You’ll find eight A-size doors, each measuring 12-3/4″ wide across 3-1/8″ high, plus two parcel lockers—one small and one large—to handle various package sizes. The heavy-duty 5-pin cylinder cam locks with dust and rain shields keep your mail safe, and you get three keys per lock. Designed for USPS principal lock compatibility, it includes a carrier access door and a matching pedestal for easy installation, ensuring both security and convenience.
- Number of Doors:8 A-size doors
- Parcel Lockers Included:2 parcel lockers (1 small, 1 large)
- Material:Heavy-duty aluminum body with stainless steel hardware
- USPS Master Lock Access:Carrier access door for USPS master lock installed by USPS
- Mounting Type:Pedestal included for mounting
- Lock Type on Doors:Heavy-duty 5-pin cylinder cam locks with dust/rain shields; 3 keys per lock
- Additional Feature:Dust/rain shield locks
- Additional Feature:Matching pedestal included
- Additional Feature:USPS-installed master lock
Salsbury Industries 8-Door USPS Access Cluster Box
Whenever you manage a community that values secure, weather-resistant mail delivery, the Salsbury Industries 8-Door USPS Access Cluster Box is a smart choice. It features 8 A-size compartments (12″x3″x15″) and 4 integrated parcel lockers, perfect for larger packages. Built with a welded heavy-gauge aluminum body and stainless-steel hardware, this unit resists weather, impact, and vandalism. Each principal door locks with 4 hook latches for added security. The USPS-owned arrow lock guarantees authorized access—just coordinate installation with your local postmaster. Finished in sandstone, this Type VI Cluster Box is USPS-approved, combining convenience and durability for your community’s mail needs.
- Number of Doors:8 A-size doors
- Parcel Lockers Included:4 fully integrated parcel lockers
- Material:Welded heavy-gauge aluminum body with stainless-steel hardware
- USPS Master Lock Access:USPS-owned arrow lock available, installation by local postmaster required
- Mounting Type:Not explicitly stated, but designed for centralized mail delivery (usually pedestal or wall mount)
- Lock Type on Doors:Not explicitly specified, but designed with security for vandalism protection (hook latches on master doors)
- Additional Feature:Welded heavy-gauge aluminum
- Additional Feature:Stainless-steel hardware
- Additional Feature:Vandalism-resistant hook latches
Salsbury 3628AFU 28-Door Horizontal Mailbox Aluminum
Choose the Salsbury 3628AFU 28-Door Horizontal Mailbox provided that you need a durable, aluminum cluster mailbox designed for multi-family or commercial use. It features 28 A-size doors (27 usable) with secure 5-pin cylinder cam locks, ensuring each mailbox stays protected. The unit measures 29.25″ W × 40.75″ H × 16.5″ D and comes with a powder-coated finish available in aluminum, bronze, gold, or sandstone. Front-loading access and surface mounting make installation straightforward. Backed with a 3-year limited warranty and ISO 9001:2008 certification, this USPS-STD-4B+ compliant mailbox combines security and convenience for your property.
- Number of Doors:28 A-size doors (27 usable)
- Parcel Lockers Included:Not specified parcel lockers
- Material:Aluminum with durable powder coat finish
- USPS Master Lock Access:One opening designated for USPS master postal lock (installed by USPS)
- Mounting Type:Surface mount
- Lock Type on Doors:5-pin cylinder cam locks with 2 keys each
- Additional Feature:Powder-coated finish options
- Additional Feature:Continuous hinge panel
- Additional Feature:3-year limited warranty
Salsbury Industries 3305GRN-U 4-Door USPS Cluster Box
Provided you need a durable and secure cluster mailbox for multiple tenants, the Salsbury Industries 3305GRN-U 4-Door USPS Cluster Box offers welded heavy-gauge aluminum construction and USPS-approved lock security to protect mail and parcels effectively. Each of the four C-sized compartments measures 12 by 6.5 by 15 inches, with two integrated parcel lockers for added convenience. You’ll appreciate the stainless-steel hardware, weather protection flap, and vandal-resistant hook latches on each chief door. Surface-mounted on a included pedestal, this green Regency-style unit guarantees safe, organized mail delivery without requiring batteries or complicated installation.
- Number of Doors:4 C-size doors
- Parcel Lockers Included:2 fully integrated parcel lockers
- Material:Welded heavy-gauge aluminum with stainless steel hardware
- USPS Master Lock Access:Approved for USPS arrow lock; contact local postmaster for installation
- Mounting Type:Surface mount with pedestal included
- Lock Type on Doors:Lockable; 4 hook latches on each master door for vandalism protection
- Additional Feature:Weather protection flap
- Additional Feature:Pedestal included with bolts
- Additional Feature:141.7 pounds weight
Salsbury 12-Door Gray Cluster Box Unit Mailbox
The Salsbury 12-Door Gray Cluster Box Unit Mailbox offers a sturdy solution for property managers and developers seeking secure, centralized mail delivery for multi-family residences or commercial complexes. With 12 A-size compartments, a parcel locker, and an outgoing mail slot, it handles diverse mail needs efficiently. Crafted from heavy-duty aluminum with stainless steel hardware and a durable powder-coated gray finish, it withstands harsh weather. Front access with a USPS principal lock guarantees security, while the included pedestal and mounting hardware simplify installation. Backed by a 5-year warranty and made in the U.S., it’s a reliable, long-lasting choice for your property.
- Number of Doors:12 A-size doors
- Parcel Lockers Included:1 parcel locker
- Material:Heavy-duty aluminum with stainless steel hardware
- USPS Master Lock Access:Carrier access door for USPS master lock installed by Postal Service
- Mounting Type:Pedestal included for mounting
- Lock Type on Doors:Heavy-duty 5-pin cylinder cam locks with dust/rain shields; 3 keys per lock
- Additional Feature:Outgoing mail compartment
- Additional Feature:5-year limited warranty
- Additional Feature:Front access master doors
Salsbury 8-Door USPS Type I Cluster Box Unit
Serving multi-family homes and commercial developments, the Salsbury 8-Door USPS Type I Cluster Box Unit offers durable, secure mail access with its heavy-duty aluminum construction and integrated parcel lockers. You’ll appreciate the black powder-coated finish resisting weather and wear, plus stainless steel hardware ensuring longevity. This unit features eight A-size compartments and two parcel lockers for packages, all secured with 5-pin cylinder cam locks. USPS uses a principal door for carrier access, simplifying delivery. Pedestal-mounted with included bolts and fasteners, it’s easy to install. Backed by a 5-year warranty, this cluster mailbox combines security and convenience effectively.
- Number of Doors:8 A-size doors
- Parcel Lockers Included:2 parcel lockers (1 small, 1 large)
- Material:Heavy-duty aluminum body with stainless steel hardware
- USPS Master Lock Access:Carrier access door for USPS master lock installed by USPS
- Mounting Type:Pedestal included for mounting
- Lock Type on Doors:Heavy-duty 5-pin cylinder cam locks with dust/rain shields; 3 keys per lock
- Additional Feature:Outgoing mail compartment integrated
- Additional Feature:Matching pedestal and fasteners
- Additional Feature:5-year limited warranty
Factors to Consider When Choosing Cluster Mailboxes
While selecting cluster mailboxes, you’ll want to think about size options to fit your needs and materials that hold up over time. Security features and USPS compliance are vital to keep mail safe and meet regulations. Don’t forget to factor in installation requirements to guarantee a smooth setup process.
Mailbox Size Options
Picking the right mailbox size means balancing your community’s needs with available space and delivery types. Standard A-size compartments, about 12.75″ wide by 3.125″ high, fit letters and small flats perfectly. Should your residents receive magazines or larger envelopes, consider C-size compartments, roughly 12″ wide by 6.5″ high. For parcels, look for lockers around 12″–13.5″ high and 12″ wide to handle bigger packages that won’t fit in regular compartments. Don’t forget to check depth—15″ or more is ideal to accommodate padded envelopes and small parcels. Finally, choose total capacity based on the number of recipients and expected parcel volume, balancing small compartments with integrated parcel lockers to keep mail secure and accessible.
Material Durability
Balancing mailbox size is only part of the equation; making certain your cluster mailboxes stand up to daily use and weather is just as vital. Choose heavy-gauge materials like welded aluminum or stainless steel for the mailbox body and hardware to resist impact, corrosion, and long-term exposure. Durable finishes such as powder coating or anodizing offer UV protection and prevent chipping, flaking, and rust. Inspect hinges, latches, and lock housings to confirm they’re stainless steel or reinforced, with multi-point latching to reduce wear. Opt for units featuring dust and rain shields plus sealed seams to minimize water intrusion and interior corrosion. Finally, check manufacturer durability ratings, warranties, and compliance with postal or industry standards as reliable indicators of long-term performance.
Security Features
Although durability is essential, you can’t overlook security features whenever choosing cluster mailboxes. You should pick mailboxes with heavy-duty cylinder cam locks—5-pin or better—and get multiple keys per lock to minimize unauthorized access and handle key loss easily. Make sure the carrier or chief access uses a USPS-approved arrow lock or a secure equivalent, so postal workers can deliver without compromising individual compartments. Look for vandal-resistant designs, including multi-point latching like hook latches and reinforced door panels that resist prying. Opt for corrosion-resistant materials and stainless-steel hardware with dust or rain shields over locks to keep security intact in harsh weather. Finally, check that parcel locker sizes and locking mechanisms are secure and separate from letter compartments to prevent package theft and unauthorized access.
USPS Compliance
Upon selecting cluster mailboxes, you need to make certain they fully comply with USPS standards to guarantee reliable centralized mail delivery. Secure the mailbox unit meets the current USPS specifications for its type, like CBU or STD-4B/4B+, so it’s approved for postal access. Check that it includes a designated USPS carrier access point or a chief lock provision compatible with USPS arrow locks and carrier procedures. Verify compartment sizes and parcel locker configurations match USPS minimum dimensions to handle standard mail and parcels. Confirm the mailbox’s construction, weatherproofing, and security features meet USPS requirements for durability and vandal resistance. Finally, coordinate installation and USPS lock activation with your local postmaster to secure acceptance and smooth postal service access.
Installation Requirements
After confirming your cluster mailbox meets USPS compliance, you’ll need to focus on installation requirements to guarantee proper functionality and accessibility. To begin, check local postal regulations for approved mailbox types, lock access, and certification standards. Make sure the location meets clearance rules, including minimum pathway width, mounting height (usually 48–52 inches to the mailbox center), and ADA reach compliance. Verify structural needs such as pedestal or wall mounts, concrete footing size, and weight support to resist vandalism, weather, and package loads. Plan for proper drainage and level ground placement to avoid obstructing sidewalks or sight lines. In closing, coordinate with your postal carrier about access needs, chief lock installation, and schedule a final inspection to make certain everything’s set correctly before use.
Parcel Locker Availability
Picking the right cluster mailbox means making certain it has enough parcel lockers to handle your expected package volume. Since parcel compartments are larger and fewer than letter slots, you need to check their size dimensions to fit common packages, like small (~12″ x 10″) or larger parcels. Also, consider the ratio of parcel lockers to mail compartments—higher-density areas demand more lockers per unit to prevent overflow. Look for designs offering mixed locker sizes for flexibility, so you’re not stuck with one size that doesn’t fit all your packages. Finally, assess the security and access features—robust latches, USPS/master access compatibility, and weather protection make certain your parcels stay safe and accessible only to authorized users.
Weather Resistance
Don’t underestimate the importance of weather resistance whenever choosing cluster mailboxes, especially provided your location faces harsh conditions. You want boxes made from corrosion-resistant materials like aluminum or stainless steel, finished with a durable powder-coat to prevent rust and paint damage. Look for features like integrated weather seals, rain and dust shields over locks, plus overlapping door seams to keep moisture, snow, and debris out. Make certain parcel lockers and chief doors have positive latching with multi-point hooks or compression seals to block water during storms. Drainage and ventilation, such as weep holes or screened vents, help avoid condensation buildup while keeping pests out. Finally, check for environmental ratings or tests verifying corrosion, UV, and impact resistance to confirm your mailbox holds up long-term in your climate.
Maintenance Needs
While weather resistance helps protect your cluster mailboxes from harsh conditions, regular maintenance keeps them functioning smoothly and extends their lifespan. You should inspect locks and cylinders every 6 to 12 months, lubricating them with graphite or dry Teflon to prevent binding and reduce key breakage. Check exterior paint or powder-coat finishes and touch up any chips to avoid aluminum corrosion. Verify weather seals and door gaskets annually, replacing any torn or hardened seals to keep moisture and pests out. Also, tighten mounting hardware and hinges twice a year to prevent misalignment or security issues. Finally, establish a routine cleaning schedule using mild detergent, clearing debris from parcel lockers and drainage areas to maintain proper operation and avoid blockages. Regular upkeep guarantees your cluster mailboxes stay secure and reliable.
