10 Best USPS Parcel Lockers in 2026

Every property manager knows the drill: missed delivery notices piling up, packages left on doorsteps, tenants complaining. A USPS-approved parcel locker changes that. It gives carriers a single secure drop point and residents a convenient, 24/7 way to retrieve their mail and packages. The trick is picking the right configuration for your building’s size and parcel volume.

The best USPS parcel lockers come from Salsbury Industries, which dominates this category with cluster box units and standalone parcel lockers. Whether you need 16 tenant compartments for a large complex or a simple two-door locker for a small office, the choice comes down to capacity, compartment size, and your local postmaster’s approval process. We’ve sorted through the most popular models to help you match a unit to your property.

TL;DR: The Salsbury 16 A-Size Cluster Box Unit is the best option for most apartment complexes: 16 compartments and two parcel lockers. The 13-Door Type IV with Parcel Locker fits smaller buildings that need integrated parcel space. For standalone package drops, the 2-Compartment Outdoor Parcel Locker serves single-family homes and small businesses well.

#	Product	Type	Compartments	Color	Best for
1	Salsbury 16 A-Size Cluster Box Unit	Type III Cluster Box	16 A-size + 2 parcel lockers	Gray	Large apartment complexes
2	Salsbury 8 A-Size Cluster Box Unit	Type I Cluster Box	8 A-size + 2 parcel lockers	Black	Medium multi-family buildings
3	Salsbury 13-Door Type IV with Parcel Locker	Type IV Cluster Box	13 B-size + 1 parcel locker	Sandstone	Mixed-use or smaller complexes
4	Salsbury 4 C-Door Type V Cluster Box (Black)	Type V Cluster Box	4 C-size + 2 parcel lockers	Black	Townhouses and garden apartments
5	Salsbury 4 C-Door Type V Cluster Box (Sandstone)	Type V Cluster Box	4 C-size + 2 parcel lockers	Sandstone	Same as #4, different color
6	Salsbury 2-Compartment Parcel Locker (Gray)	Standalone Parcel Locker	2 large compartments	Gray	Single-family rentals, small offices
7	Salsbury 2-Compartment Parcel Locker (Black)	Standalone Parcel Locker	2 large compartments	Black	Same as #6, black finish
8	Salsbury 2-Compartment Parcel Locker (Sandstone)	Standalone Parcel Locker	2 large compartments	Sandstone	Same as #6, sandstone finish
9	Salsbury 4-Compartment Parcel Locker (Sandstone)	Standalone Parcel Locker	4 large compartments	Sandstone	Higher-volume drop-off locations
10	Salsbury 4-Compartment Parcel Locker (Gray)	Standalone Parcel Locker	4 large compartments	Gray	Same as #9, gray finish

How we picked

• USPS approval and lock compatibility. Every unit must accept the USPS-owned arrow lock that carriers use. Some come with a prep-drilled carrier door; all require coordination with your local postmaster for lock installation.
• Compartment count and size. Cluster boxes offer A-size (3.125 in. high), B-size (4.875 in.), and C-size (6.5 in.) compartments. Parcel lockers have tall, large-volume compartments that fit parcels up to 19.75 in. high.
• Build material and finish. Heavy-gauge aluminum with a powder-coated finish resists rust and dents. Stainless-steel hardware matters for outdoor installations in humid or coastal areas.
• Included pedestal and mounting. A matching pedestal is included with most units, which simplifies installation. Some standalone lockers need a concrete pad; cluster boxes typically mount on the included post.
• Security features. Hook latches on master doors and five-pin cylinder cam locks on individual compartments protect against forced entry. Look for dust-and-rain shields on the locks for added longevity.

1. Salsbury 16 A-Size Cluster Box Unit: Best for Large Complexes

Pros

• 16 A-size mail compartments plus two parcel lockers (one small, one large)
• Heavy-gauge aluminum construction with stainless steel hardware
• Matching pedestal included
• Carrier access door pre-drilled for USPS master lock

Cons

• A-size compartments are shallow for bulky mail
• Large footprint requires enough sidewalk or common-area space

Best for: Property managers of apartment buildings with 16 or fewer units who want a single unit that handles both mail and parcels.

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This Type III cluster box unit is the most popular option in Salsbury’s lineup. The 16 individual compartments are sized for standard envelopes and small flats, while the two dedicated parcel lockers take care of packages that don’t fit. That split design means a carrier can tuck a bubble mailer into an A-size door, but any box larger than about three inches thick goes into one of the parcel lockers.

The build quality is what you expect from Salsbury: welded aluminum, not sheet metal, with a baked-on gray powder coat that holds up to sun and rain. The pedestal is included and bolts to a concrete pad, so you don’t have to hunt for a separate mounting kit. One thing to keep in mind: the A-size compartments are only about three inches tall, so magazines or thin catalogs fit fine, but anything thicker will end up in the parcel locker. That’s fine for most situations, but if your tenants tend to get thick mailers, you might prefer a model with larger individual compartment sizes.

2. Salsbury 8 A-Size Cluster Box Unit: Tight Fit for Medium Buildings

Pros

• Compact 8-unit layout with two parcel lockers
• Heavy-duty five-pin cam locks with dust/rain shield
• Pedestal included

Cons

• Only eight mail compartments; no expansion possible
• A-size compartments again limit mail thickness

Best for: A fourplex, eight-unit condo, or commercial space where you need fewer tenant slots but still want parcel capacity.

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The Type I unit is essentially a smaller sibling of the 16-door model. You get eight A-size doors plus one small and one large parcel locker in a package that’s the same 30.5-inch width but probably a bit easier to place on a narrower walkway. The locks on each tenant door are the same five-pin cylinder type with a plastic shield that keeps rain out, a nice touch for outdoor installations.

The obvious limitation is that you can’t add more compartments later. If your building grows or you convert a single-family home into a duplex, this unit might max out quickly. But for its intended eight-tenant capacity, it’s well built and straightforward. Black powder coat is a good choice if you’re matching existing black light fixtures or fences.

3. Salsbury 13-Door Type IV with Parcel Locker: The Balanced Mix

Pros

• 13 B-size compartments (4.875 in. tall) for thicker mail
• Integrated small parcel locker
• Matching pedestal included
• Sandstone finish blends with many building exteriors

Cons

• Only one parcel locker versus the two in most other models
• 13 doors mean you might have an odd numbered match to your tenant count

Best for: Buildings with 13 or fewer units where tenants get moderate-sized mail and packages are less frequent.

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B-size compartments are noticeably taller than A-size, so they handle thicker catalogs and small padded envelopes without forcing everything into the parcel locker. The single parcel locker in this Type IV unit is on the smaller side (12 x 10 inches), which means it fits a shoe box but not a larger Amazon box. If your tenants get big packages, you will need a backup plan or a supplementary parcel locker.

The sandstone color is a popular neutral that doesn’t show dirt as readily as gray or black. This unit weighs 155 pounds empty, so it’s a two-person job to move and install. It includes the carrier access door ready for the USPS arrow lock. You’ll need to contact your local postmaster to have that lock installed. That’s standard for all USPS-access units, but some postmasters take longer than others.

4. Salsbury 4 C-Door Type V Cluster Box (Black): Spacious Compartments

Pros

• Four C-size compartments (6.5 in. tall) fit larger mail and small packages
• Two integrated parcel lockers
• Four hook latches on master doors for added security

Cons

• Only four tenant slots; not scalable
• Larger doors mean the unit is heavier than A-size versions

Best for: Townhouse developments, quadplexes, or small groups of condos where each unit gets C-size mail and parcels.

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The Type V design gives tenants the most generous individual compartment in Salsbury’s cluster box range. At 6.5 inches high, a C-size door can swallow a small binder, a magazine, and a padded envelope all at once. The two parcel lockers then handle anything too wide or deep. This is the best setup if your residents get lots of subscription boxes or thick catalogs.

Security is a step up: the master doors use four hook latches instead of the two found on some models. That makes it harder to pry the door open. The black finish is standard industrial black, durable but it does show scratches more than sandstone over years of use.

5. Salsbury 4 C-Door Type V Cluster Box (Sandstone): Same Build, Different Color

Pros

• Same spacious C-size compartments and parcel lockers
• Sandstone finish hides wear better than black
• Heavy-gauge aluminum with welded construction

Cons

• Identical capacity limitation of four tenants
• No additional color options

Best for: The same quadplex scenario when the property’s exterior uses warm earth tones.

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This is the sandstone version of the previous unit. Everything we said about the black one applies here: C-size compartments, two parcel lockers, four hook latches. The only difference is the color. Sandstone is the more popular finish for this model, and it’s easy to see why. It blends into brick and stucco walls better than black or gray, and it doesn’t show finger smudges or minor scuffs.

If you’re choosing between the two, pick based on what matches your building’s trim and your HOA’s rules. There’s no performance difference.

6. Salsbury 2-Compartment Parcel Locker (Gray): Simple Standalone Drop

Pros

• Two large front-loading compartments (12 x 19.75 x 15 in.)
• Pedestal included
• Pre-drilled for USPS arrow lock

Cons

• No mail compartments; for packages only
• Two compartments limit high-volume use

Best for: A single-family rental, small law office, or any location that gets packages but does not need tenant mail slots.

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If you already have a mail setup (like a wall-mounted mailbox) and just need a secure place for packages, this standalone parcel locker is the cleanest solution. Each compartment is 19.75 inches tall and 12 inches wide, enough for most cardboard shipping boxes. The lock system works with a two-key setup: the carrier opens the master door with the USPS arrow lock, places the package, and then a tenant key locks the individual compartment. The tenant retrieves the package with a key that stays unique to that delivery.

The gray finish is neutral, but the unit still looks like industrial equipment. You’ll want it in a corner or near an entrance, not front and center. At 100 pounds with the pedestal, it’s manageable to install with two people.

7. Salsbury 2-Compartment Parcel Locker (Black): Dark Finish for Modern Properties

Pros

• Same large compartments and pedestal
• Black powder coat matches contemporary architecture
• USPS carrier access door included

Cons

• Black shows dust and scratches more than gray
• Same two-compartment limit

Best for: Modern apartment lobbies, condos with dark trim, or commercial spaces that prefer a sleek look.

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Functionally identical to the gray model. The black finish is a bit more prone to showing scratches from key usage, but it’s still a durable coating. If your property has a dark mailbox or door hardware, the black locker will look cohesive. Many property managers choose black for indoor vestibule installations where it matches the metal accents.

8. Salsbury 2-Compartment Parcel Locker (Sandstone): Warm Tone for Brick or Stucco

Pros

• Sandstone color blends with many building facades
• Same USPS-approved design
• Made in the United States

Cons

• No extra features beyond the two-door design
• Color may not match all paint schemes

Best for: Adding a parcel drop to a house or office with sandstone or beige exterior finishes.

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The sandstome variant rounds out the three color options for the two-compartment locker. Salsbury manufactures this one in the United States. The dimensions are the same as the other two: 12-inch wide compartments, 19.75 inches tall, 15 inches deep. If you’re looking for a drop-in solution that already matches the color of your existing Salsbury products, this is the one to pick. It doesn’t add anything new functionally, and that’s fine.

9. Salsbury 4-Compartment Parcel Locker (Sandstone): More Capacity for Busy Locations

Pros

• Four large compartments handle higher package volume
• Two-key security system manages multiple deliveries
• Heavy-duty aluminum with powder coat

Cons

• Larger and heavier than two-door models
• Still no mail compartments; requires separate mail solution

Best for: Laundry rooms, co-working spaces, or duplexes where multiple packages arrive simultaneously.

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Stepping up to four compartments changes how you manage parcel delivery. With more slots, the carrier doesn’t have to worry about a compartment being already occupied. The two-key system works the same as the smaller lockers: the carrier uses the arrow lock to open the master access, then the tenant uses a separate key for his or her assigned compartment. Each tenant gets a dedicated key, so the system works like a small post office.

The footprint grows to 31 inches wide and 71.75 inches tall, which is comparable to a tall storage cabinet. You’ll need a solid concrete pad and maybe a wall anchor if the unit is in an area prone to wind. Sandstone is the color here; a gray version is also available (next pick).

10. Salsbury 4-Compartment Parcel Locker (Gray): Practical Choice for High-Visibility Areas

Pros

• Same four-compartment design and build
• Gray finish is low-maintenance
• Durable powder coat

Cons

• No different from the sandstone version besides color
• Requires a dedicated installation space

Best for: Anyone who prefers a neutral gray that matches most outdoor equipment.

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The gray four-door is the other half of the pair. It’s the same locker as number nine, just finished in gray. The gray is slightly more utilitarian, less prone to showing dirt than white but not as warm as sandstone. If you’re placing this in a shared garage or loading area, gray tends to blend in with the walls. For outdoor installation in a courtyard, sandstone might look more intentional. Hard to go wrong either way.

Buyer's Guide: How to Choose USPS Parcel Lockers

Before you buy a USPS parcel locker, you need to understand a few key factors that determine whether a unit will work for your property and pass your local postmaster’s inspection.

USPS Approval and the Arrow Lock

Every unit listed here is built to USPS standards. That means it has a carrier access door that accepts the USPS-owned arrow lock. You cannot buy that lock from Amazon; you have to contact your local postmaster, request the lock installation, and have a postal carrier use it on every delivery. The postmaster will also inspect the location to ensure the locker is accessible and secure. This process can take a few weeks, so factor in that lead time when planning.

Compartment Size and Type

Cluster box units come in A, B, and C sizes. A-size compartments are about 3.1 inches tall, good for standard envelopes and thin catalogs. B-size compartments are 4.9 inches tall, fitting thicker mailpieces without jamming. C-size compartments are 6.5 inches tall, which is enough for small parcel-like items. If your tenant base gets a lot of magazines and padded mailers, choose B or C over A.

Parcel lockers don’t have individual mail compartments. They are essentially large boxes for packages only, with compartment heights around 19–20 inches. You would pair a parcel locker with a separate mailbox system if you need both mail and parcel service.

Material and Weather Resistance

All Salsbury units use heavy-gauge aluminum, which won’t rust. The powder-coated finish adds a layer of UV and scratch protection. Stainless steel hinges and hardware are standard. For coastal areas or humid climates, aluminum is the better choice over steel. The pedestal is usually included, but you’ll still need to pour a concrete pad or mount the unit on an existing slab.

Security Features

Look for hook latches on master doors. These engage multiple points along the edge of the door, making prying much harder. Individual compartment locks are typically five-pin cylinder cam locks. Some models include a dust/rain shield that covers the keyhole, which prevents water from freezing the lock in winter. If you’re installing outdoors in a snowy region, that shield is a must.

Number of Users and Future Growth

Do not buy a unit that exactly matches your current tenant count if you might add units later. A 16-door cluster box handles up to 16 residents, but if you convert a garage into an apartment, you’ll be stuck. Consider sizing up slightly or choosing a modular system that can be expanded. Standalone parcel lockers are not expandable.

Frequently Asked Questions

Do I need USPS approval to install a parcel locker?

Yes. The locker must be approved by the U.S. Postmaster General before a carrier can deliver to it. You purchase the unit, then contact your local postmaster to schedule the installation of the USPS arrow lock. They will also verify the placement and accessibility.

What is an arrow lock?

It is a high-security lock owned by the United States Postal Service. Carriers use a universal key to open the carrier access door on approved parcel lockers and cluster box units. You cannot buy or copy arrow lock keys; only USPS personnel possess them.

Can I install the locker myself, or do I need a contractor?

The physical installation is straightforward: the unit bolts to a concrete pad or a pedestal that you set. Many property managers do it themselves with a helper. The USPS lock installation, however, must be performed by a postal service technician. Do not drill holes for the lock yourself.

What sizes of packages fit in these lockers?

For cluster box units, the parcel locker compartments typically measure about 12 inches wide by 10 to 13.5 inches tall by 15 inches deep. Standalone parcel lockers have larger compartments at 12 inches wide by 19.75 inches tall by 15 inches deep, which fits most standard shipping boxes.

How do tenants retrieve packages?

Each parcel locker compartment uses a two-key system. The carrier places the package, sets a unique key in the compartment, and the tenant uses that key to open the door. The carrier keeps a master key for the arrow lock. Tenants receive their key at the time of delivery.

What is the difference between a cluster box unit and a standalone parcel locker?

A cluster box unit combines individual mail compartments (A, B, or C size) with one or more parcel lockers. It is a one-stop solution for mail and packages. A standalone parcel locker only accepts packages. You would need a separate mailbox or mailroom for letters if you choose a standalone locker.

Can I change the color after purchase?

No. The powder coating is factory-baked. You cannot repaint the unit without removing the coating, which is not practical. Choose the color carefully to match your property’s exterior.

Final Verdict

For large apartment complexes, the Salsbury 16 A-Size Cluster Box Unit is the clear winner. It packs the most tenant compartments and two parcel lockers into a single unit that will serve a 16-unit building for years. If you need fewer mail slots but want larger individual compartments, the 4 C-Door Type V (in black or sandstone) gives tenants more room for their mail. For standalone drop-off needs, the 2-Compartment Parcel Locker line (pick your color) is the simplest way to secure package deliveries without changing your existing mail infrastructure.

Still undecided? Look at your monthly package volume. If it’s more than a few per day, go for a four-compartment standalone or a cluster box with two parcel lockers. If packages are rare, the two-door models are plenty. And always call your postmaster before ordering to confirm the approval process.

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