Call Us: (866) 707-0008 - We Love Customers!
Free Shipping

Salsbury 3600C5-GFU Collection Unit For 5 Door High 4B+ Mailbox

(View all from Salsbury Industries)
SKU: WL-3600C5-GFUBM  |  View All Collection & Drop Boxes
Salsbury 3600C5-GFU Collection Unit For 5 Door High 4B+ Mailbox
Mouseover to Zoom
Click to Enlarge
& Free Shipping!
List Price:
You Save:

$249.03 (20%)

Volume Discount Pricing
2 - 5$899.50
6+ $808.50
USPS Approved
According to manufacturer:
Standard - Usually ships in 3 to 5 business days
Custom - Usually ships in 1 to 2 weeks
Ships directly from the factory floor to ensure the quickest available delivery.

Salsbury 3600C5-GFU Collection Unit For 5 Door High 4B+ Mailbox

All Salsbury 3600 series are made entirely of aluminum. The USPS approved 4B+ custom horizontal mailboxes are available in four (4) different mailbox door sizes and three (3) different parcel locker door sizes. Each aluminum mailbox door includes a five (5) pin cylinder cam lock with two (2) keys and a 2" W x 5/8" H clear plastic card holder (card included) to identify the tenant’s name and/or box number.

The mailbox compartments are made of sheet aluminum. 3600 series 4B+ custom horizontal mailboxes can integrate different combinations of mailbox and parcel locker doors and are available in four (4) contemporary colors - aluminium, bronze, gold, and sandstone. Custom colors are available as an option upon request. Matching collection units (5, 6 and 7 doors high) are also available. Custom horizontal mailboxes are ideal for apartments, condominiums, commercial buildings, colleges and schools and many other applications.

If Front Loading:
Door panel swings on a continuous hinge. One mailbox opening (A and B doors only) is required for a master postal or commercial lock and cannot be used for mail distribution. Units include factory installed 3/4" W x 1/4" D trim and a solid rear cover.

If Rear Loading:
Mailboxes can be used for either USPS access (master postal lock not required) or private access (master commercial lock not required). All openings are usable. Units include factory installed 3/4" W x 1/4" D trim and a removable rear cover.

Model: 3600C5
Description: Collection Unit (for 5 door high unit)
Door Size:
21" W x 29-3/4" H x 12" D
60 lbs.

PARCEL LOCKERS can be integrated into a 3600 series mailbox system and are a convenient way to receive packages on site. Parcel lockers are fit with a two (2) key security system that allows the USPS or an individual to deliver a parcel to the locker and place a parcel locker key in the recipient’s mailbox. Once the recipient opens the parcel locker, the key is automatically retained in the lock until it is removed with a control key.

4B+ Custom Horizontal Mailbox Options

  • Plexiglass window (#3671) 2" W x 5/8" H
  • Mail slots (#3669)
  • Standard mail slot sizes for 3600 series:
    A Door - 5-1/2" W x 3/4" H
    B Door - 12" W x 3/4" H
    C Door - 5-1/2" W x 3/4" H
    D Door - 12" W x 3/4" H
    (for installations not serviced by the USPS)
  • Custom slot sizes are available upon request
  • Card holder - clear plastic - card and metal insert included (#3697)
  • Custom finish – aluminium, bronze, gold, sandstone (#3666)
  • Custom engraved placards (#3667)
  • Custom engraved door – regular (door will be solid - no card holder) (#3668)
  • Custom engraved door - black filled (door will be solid - no card holder) (#3674)
  • Custom engraving on collection unit – regular (#3665)
  • Custom engraving on collection unit - black filled (#3670)
  • Self-adhesive numbers - sheets of 100 (#3695)
  • 4B+ Master door security retrofit kit (#3696)

Door and Compartment Identification
Each mailbox door includes a 2" W x 5/8" H clear plastic card holder (#3697) to identify the tenant’s name and/or box number. Self-adhesive numbers (1-3000 available) are supplied upon request with each order. Custom identification systems are available as an option upon request. Label holders (#1070) neatly organize and identify the front/rear of the mailbox compartments and are available as an option upon request.


  • Each mailbox door includes a five (5) pin cylinder cam lock with two (2) keys (1,000 different key changes). (#3690)
  • Three (3) digit single dial combination lock with spring latch and automatic throw-off (#3686)
    (combination numbers can be changed by owner) (for installations not serviced by the USPS)
  • Thumb latch (in lieu of standard lock) (#3689)
  • Additional keys per lock when ordering (#3698)
  • Custom lock installation - cylinders provided by owner - (100) door minimum (#3693)
  • Key blanks - box of 50 - for 3600 series

For Your Reference:

OUR SKU is Salsbury Industries 3600C5-GFU

This item is also sometimes listed under the following manufacturer numbers:

Dimensions & Weight
Ship Weight:
Salsbury 3600C5-GFU Collection Unit For 5 Door High 4B+ Mailbox
21 in. W x 29.75 in. H x 12 in. D
60.00 lbs
General Category:
Commercial Mailbox
  • If you need help or have a question for Customer Service, Contact Us or Chat Now.
  • Would you like to update product info, give feed back on images, or tell us about a lower price?
  • Or if there is any other feedback you would like to provide? Please contact us.
Frequently Asked Questions

Salsbury 3600C5-GFU Collection Unit For 5 Door High 4B+ Mailbox
Shipping Information:

Shipping Estimate:

Standard - Usually ships in 3 to 5 business days
Custom - Usually ships in 1 to 2 weeks

Stock Status:

In Stock

Ships to:

Ship Method:

FedEx/UPS (Learn More)

Shipping Policy:

Return Policy:

Return Instructions:

70,000+ Satisfied Customers

and counting...privacy-guaranteed

We are a Google Trusted Store. So shop with confidence!

Regarding a Product's Shipping Estimate

Understanding Lead Times

The lead times listed on this product page represent the best-case scenario for shipping estimates. While we may show that a product "usually ships" within a given period, this period should not be confused with a delivery estimate. Rather, we expect the product to ship from the manufacturer's warehouse within this time-frame.

What does this mean for you? Once you place an order on our site, we begin processing the order with the manufacturer. The processing lead time we list on the product page is the most current estimate from the manufacturer regarding the product.

Below, we answer the top three FAQs our customers have regarding delivery estimates.


How long will it take to receive my commercial mailbox?

When you order a commercial or cluster mailbox, we process the order with the manufacturer within 1 business day. Once processed, the order usually ships in the time-frame listed on the product page. Since Cluster Mailboxes are large items, they ship via freight carriers. This means that the transit times for these will usually be 5 to 7 business days.

A few things to note about purchasing a cluster mailbox or similar large, commercial-grade product:

  • The freight carrier will call the number you list on the shipping address a day before delivery to schedule a delivery appointment with you.
  • The manufacturer ships using their chosen freight carrier depending on the products ordered and the delivery location.
  • The majority of online retailers who sell commercial mailboxes (CBUs, etc.) ship directly from the manufacturers, just as we do.
  • If you purchase a commercial mailbox from us and decide to cancel because a competitor lists a "faster" lead time on their site, you may be delaying the time it will take to receive your mailboxes. Why? Because you are placing a new order to be sent to the same manufacturer for processing.
  • If you choose professional mailbox installation with your commercial mailbox purchase, please note that same-day installation is not available. Installation will be scheduled after the delivery of your mailbox. In most cases, installation is completed within one week following delivery.

What if I order multiple products from different brands?

If you ordered multiple products, it is possible that they are made by different manufacturers. If this is the case, your products will ship to you separately from each manufacturer.

For example, if you purchase a Mayne Post with a Whitehall Mailbox, your post will ship from Mayne's warehouse in about 3 business days, but your mailbox will ship separately from Whitehall in about 2 to 3 weeks if customized with address numbers.

How can I estimate my shipment's transit time?

Depending on the carrier and your location, transit times will vary. Delivery estimates are best projected using your carrier tracking number. Once your order ships, we'll send you a shipping confirmation email that includes your carrier (FedEx, UPS, YRC, etc.) and tracking number.

Note: If you place an order with us and do not receive an Order Confirmation email, check your spam inbox. If you still do not see an Order Confirmation email in your inbox, contact us right away at (866) 707-0008 . We will provide you with your Order Number and any other details you need.

What is the CBU Price Match Guarantee?

Price Match

It's pretty simple. If you find this model* cluster mailbox on another online retail site for a lower price, including any shipping and taxes, then we will match that competitor's price.

Before we can match a competitor's price, please note:

  • We will need the exact URL of the product page in question. A screenshot of the competitor website will not suffice.
  • Some competitors hide their freight charges until you enter the checkout, so please keep this in mind.
  • If you are ordering multiple units, check our Volume Discount Pricing table (to the right of our sale price) to see if we're the better price for the quantity you need.

* By "model", we mean a CBU that has the same number of tenant doors and the same manufacturer specifications.

Wall Mount Mailboxes Locking Mailboxes Commercial Residential