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Versatile Front Loading Single Column Mailbox Collection Drop Box with Pull Down Hopper - 4C08S-HOP

(View all from Auth-Florence)
SKU: WL-4C08S-HOPBM  |  View All 8 Door High Front Loading 4C Mailboxes
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$172.30 (20%)

Volume Discount Pricing
2 - 5$649.00
6+ $618.67
USPS Approved
Select Option


Mounting Option

According to manufacturer:
Usually ships in 2 to 3 weeks
Ships directly from the factory floor to ensure the quickest available delivery.

Understanding 4C Mailboxes by Overall Height


Actual: 30-1/4”H x 31-9/16”W (Double) or 17-1/2”W (Single) x 17”D / Rough Opening: 29-5/16”H x 30-5/16”W (Double) or 16-1/4”W (Single) x 17”D

(Compartment Types)
(14 MB1)
(13 MB1)
(9 MB1, 1 PL5)
(7 MB2)
(4 MB2, 1 PL6)
# Mailboxes (Total)1413974
# Parcel Lockers (Total)00101
# Collection11111
# BINS00000
# Mailboxes Under 48”109552
Module Weight (lbs)8180787271


Actual: 30-1/4”H x 31-9/16”W (Double) or 17-1/2”W (Single) x 17”D / Rough Opening: 29-5/16”H x 30-5/16”W (Double) or 16-1/4”W (Single) x 17”D

(6 MB1)
(3 MB2)
(1 MB1, 1 PL5)
(1 PL3, 1 PL5)
(Compartment Types)
631000# Mailboxes
001002# Parcel Lockers
111100# Collection
000010# BINS
420000# MB under 48”
444040524437Module Weight

Required Height from the Floor

Mounting at specified heights AFF (Above Finished Floor) ensure USPS installation requirements are met.

  • If your installation is for USPS delivery and contains any tenant compartments in the bottom row, the minimum height from the floor is 28 inches.
  • If your installation contains no tenant compartments in the bottom row, you have the option to install at a minimum of 15 inches from the floor to be compliant with ADA and USPS requirements.

As we mention in USPS Approved or Private Delivery?, any 4C mailbox on Budget Mailboxes listed as USPS approved already meets these specifications, so your only concern would be to ensure that your installation location is configured properly for the specific 4C you intend to purchase and install.

Numbering Your Tenant Doors

Rather than assigning mailbox ID plates that match apartment or house numbers, sequential or standard numbering may help you meet the accessibility regulations related to your project. Standard numbering may also provide greater security and privacy for residents who do not wish for their home or unit address to be displayed on a specific tenant box. Even so, custom numbering and custom engraving are each available as additional options if standard numbering will not suit your needs.

Florence 4C Quick Reference Guide

For more information regarding USPS regulations and our available 4C door height configurations, please see this detailed page.

4C Horizontal Mailboxes

USPS Approved Mailbox

The 4C Horizontal is the industry standard for recessed mounted centralized delivery. Unlike the CBU, the 4C unit is usually recessed in a wall, indoors or outdoors, or in a kiosk (typically outdoors).

However, you can purchase the 4C with a surface mount collar or free-standing kiosk if you do not intend to install the units into a wall. These can be purchased with or without parcel lockers for package delivery, and can be selected for either USPS or private delivery. Available in a variety of door configurations and architectural colors, the 4C mailbox is an ideal solution for apartment complexes and commercial buildings.

In our product description below, you will find information covering a variety of common 4C mailbox questions as well as detailed specs that you can apply to your next new construction or renovation project.

The Industry's Best Product Warranty

5 Year Product Warranty

Florence provides an unrivaled five-year warranty on its products, from the date of shipment when purchased from an Authorized Florence Dealer like Budget Mailboxes. Click here to view full details on the product warranty or call us at (866) 707-0008 if you still have questions.

Design and Other Specifications

Optional Anchor Bolts

Effective October 5, 2006, all new designs approved for New Construction and Major Renovations require U.S. Postal Service STD-4C compliant mailbox systems. The new USPS 4C Standard includes the following specifications:

  • A new compartment form factor minimum size requirement of 12 in. w x 15 in. d x 3 in. h
  • Eliminates the vertical form factor (5 in. w x 6 in. d x 15 in. h) design
  • Introduces a parcel locker requirement based on a 1:10 parcel locker to customer compartment ratio
  • Strengthens security requirements for the entire receptacle
  • Standardizes and improves tenant compartment lock design
  • Adds testing requirements to verify acceptability for either indoor or outdoor use.Introduces quality management systems provisions
  • Enhances design flexibility for concept, ergonomics, and materials
  • Meets Americans with Disabilities Act (ADA) standards

4C mailboxes are designed to meet or exceed the USPS specifications. See here for more details.

Fully Integrated parcel locker(s) with key trapping lock
Interlocking, overlapping seams to prevent prying
Standard decals or 3/4” H engraving
Solid aluminum integrated outgoing mail collection compartment prepared for USPS installed Arrow Lock
Integrated Outgoing Mail Slot with weather protection hood
Product and manufacturer ID serial tag
Heavy duty tenant cam lock with three keys
Stainless steel hold open door catch on each side of master gate
Easy release handle to open master gate
Aluminum comb prevents mail fishing in outgoing mail collection compartment
Rugged, weather-resistant powder coat finish
Heavy duty cam latches through frame for added security

How many tenant doors do you need?

What is included with the CBU?

This may be the most common question guiding a customer’s search for the right 4C mailbox, as it should be. The options are diverse: you can purchase a single 4C mailbox for 1 tenant or configurations with 20 tenant boxes and 2 parcel lockers.

If you already know the number of tenant doors you need but aren’t sure which configuration to choose, here are some questions you can answer to help guide you before purchasing:

  • What size tenant doors do you need? The 4C mailbox offers tenant boxes in three sizes: MB1 (standard), MB2, and MB3. The higher the number after the “MB”, the taller the tenant box. So:
    • An MB2 slot is 6 ¾ in. High
    • An MB3 slot is 10 ¼ in. High
  • Do you need parcel lockers included with your mailboxes?
    • Note: the USPS requires one parcel locker for every ten (10) tenant boxes, which is why we sell multiple 4C configurations that already include the required number of parcel lockers.
    • If you purchase 4C mailboxes without parcel lockers, we recommend choosing recessed parcel lockers in the same height class so that the two units will match aesthetically (see more info on Height Classes).

USPS Approved or Private Delivery?


In a nutshell, here are the key differences between a USPS approved and a private delivery 4C horizontal mailbox:

  • A USPS approved mailbox meets USPS regulations for height, width, installation location, ADA accessibility compliance, and compartment size. Luckily for you, we already designate the mailboxes that meet these criteria, so all you really need to know are:
    • The number of tenants that will need access to the mailbox
    • The type of installation: whether the units will be recessed into an existing wall, mounted to an existing wall via surface mounted enclosures, or free standing in a 4C mailbox kiosk
  • (Note: if you find any of this confusing at first, don’t worry. We cover these topics in Installation Types and Options below).

  • A mailbox for private delivery doesn’t have to meet any of the USPS regulations since it will be serviced by an in-house mail department. This is most common with universities, dorms, or organizations that distribute mail in-house. If you purchase a commercial mailbox for private use, the appropriate lock will be installed and keys will be included with the unit.
  • If you want the gritty details on USPS specifications, we recommend you visit this article as it contains a thorough overview of height regulations, ADA compliance,* and how to choose mailboxes in the same height class (typically for architects or developers).

    *Note: all 4C compliant mailboxes must meet USPS design and installation requirements to be USPS Approved. Accessibility regulations may vary locally and regionally, so we encourage you to always consult local building codes for the accessibility requirements related to your mailbox project. (See Installation and Accessibility References for additional details.)

Front Loading or Rear Loading?

What is included with the CBU?

Front Loading

Front-loading mailboxes include a Master Loading Door prepared for the USPS Arrow Lock, which provides easy access to all compartments by the US mail carrier. Note: the USPS provides and installs their arrow lock, so you will not find arrow locks included with your mailbox.

Front-loading units are usually more common, whereas rear loading units tend to be less common as they require the mail carrier to load and retrieve mail from a secure room located behind the recessed mailbox (more about rear loading below).

Rear Loading

If you haven’t already guessed, the rear-loading mailbox is accessed from the back. These mailboxes include hinged and latching rear doors that are accessed by a secure mail room for USPS use. They do not have a front master loading door. Since there is no locking mechanism on the rear doors, a secure mail room behind mailboxes is required to keep mail secure.

If you still aren't sure whether you need a front or rear loading configuration, contact us and we will help you decide on the best option to fit your specific needs.

What is included with the CBU?

Customize Your Tenant Door ID Layout

What is included with the CBU?
  • Step 1 - Select "Custom Layout Required" from the dropdown option labeled Door ID Layout.
  • Step 2 - After you place your order, we will email you the layout form for you to customize.
  • Step 3 - After you’ve completed and signed the form, email it back to us and we will finalize your order.
  • Important: To ensure a custom layout is processed correctly, we ask that you complete this form after completing your purchase. For your convenience, we will also email you a copy of the form after your order is placed (note: this only applies if you select Custom Layout from the dropdown options).

Customers purchasing a 4C Mailbox with Standard Numbering or Custom Numbering applied top-down from left to right do not need to fill out this form.

Door ID Options

Door ID Options Door ID Options Door ID Options Door ID Options

Decals: All 4C commercial mailboxes come standard with silver adhesive decals 1.5 inches high by 1.75 inches wide. Black lettering can contain up to five characters per decal.

Engraving: Custom engraving utilizes the USPS Standard US Block font with up to 12 characters per line. This ¾ inch high engraving may be created with or without one of two color fill options (white or black).

See this info sheet for more details on door ID options.

Note: 4C mailboxes selected with custom decals or engraving usually ship in three (3) weeks. We cannot rush orders for units purchased with custom numbering.

Installation Types and Mounting Options

What is included with the CBU?


All 4C Horizontal Mailboxes are sold as recessed units, meaning that they will be installed into a wall. The installation requirements are usually set out in the development’s architectural planning. We provide detailed technical docs for each 4C Door Height class as well for each individual 4C model within those classes. Check the Related Downloads tab for available specification documents or, if you can’t find what you’re looking for there, give us a call at (866) 707-0008.

Surface Mount Collar

(only for front loading mailboxes)
If you do not intend to recess your 4C Mailboxes into a wall, you can mount them to the wall directly using a surface mount collar. The collar is installed to the wall, either indoors or outside, and the matching 4C mailbox is recessed into the collar instead of the wall itself. This is sometimes a more practical solution for developments where recessing into a wall is not possible or for limited wall-depth projects.

What is included with the CBU?
What is included with the CBU?

Free-Standing Depot

(only for front loading mailboxes)
In addition to a surface mount collar, customers also have the option to purchase a free-standing mailbox depot. You do not have to mount these depots (or mail kiosks) to a wall, but can place them in a convenient location either inside or outside the building, provided the location meets local USPS requirements for delivery. You would then recess the 4C mailbox into the depot enclosure.

Color Options

Auth Florence 4C Mailboxes are currently available in eight (8) different color options. The colors are listed below along with their corresponding mailbox swatch. To choose your color, select it from the dropdown options before adding the mailbox to your cart.

  • Silver
  • White
  • Sandstone
  • Postal Grey
  • Gold Speck
  • Antique Bronze
  • Dark Bronze
  • Black

Installation Manual


Looking for a different document? See our full list of printable PDFs.

16 Door CBU

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Shop with Confidence

In accordance with the requirements of the Google Trusted Stores program, Google recognizes and certifies Budget Mailboxes for:

  • An excellent shopping experience
  • Reliable on-time shipping
  • Excellent customer service

Customers have the opportunity to opt in to free purchase protection, offered by Google, for eligible purchases up to $1,000.

What does this mean for you?

  • Google can assist customers in the event that they are unsatisfied with their purchase. However, customers usually reach out to us before contacting Google.
  • Our goal is to make sure Google never has to offer support. Why? Because we want our customer support to be so good that no follow-up with Google is needed.
  • In the rare event that Google does provide support for a customer regarding a purchase on our site, we are promptly notified and make every effort to resolve support cases with the customer directly.

So, think of the Google Trusted Stores stamp as more than just a marketing icon. It’s an added layer of FREE protection for your purchase and the assurance that we will go the extra mile to resolve your support case, according to our company policies.

16 Door CBU
For Your Reference:

OUR SKU is Auth-Florence 4C08S-HOP

Dimensions & Weight
Ship Weight:
Versatile Front Loading Single Column Mailbox Collection Drop Box with Pull Down Hopper - 4C08S-HOP
52.00 lbs
Auth Florence Mfg Co.'s Categorization
versatile - 4C mailbox suites and accessories
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Frequently Asked Questions

Versatile Front Loading Single Column Mailbox Collection Drop Box with Pull Down Hopper - 4C08S-HOP
Shipping Information:

Shipping Estimate:

Usually ships in 2 to 3 weeks

Stock Status:

In Stock

Ships to:


Ship Method:

FedEx/UPS (Learn More)

Shipping Policy:

Return Policy:

Return Instructions:

Need instructions for replacing 4C parts? Access the full 4C Maintenance Sheet here.

Surface Care and Cleaning 5
Open master loading door(s) of a front loading tenant or tenant w/ parcel module 6
Open master loading door(s) of a front loading parcel only module 8
Open Master Loading door of a trash / recycling bin module 10
Removal of module from wall 12
Replacement of front master loading door hold open device for front loading modules only 14
Replacement of top and / or bottom trim 16
Replacement of front master loading door 18
Replacement of left or right front trim 20
Replacement of hinge rod 22
Replacement of front master load door hook 24
Replacement of tenant compartment door 26
Replacement of single high compartment standard tenant lock 28
Replacement of multi-high compartment standard tenant lock 30
Replacement of combination tenant lock 32
Reset combination of combination tenant lock 34
Replacement of trash / recycling bin access door lock 36
Replacement of access door for front loading modules only 38
Replacement of master lock in access door for front loading modules only 40
Replacement of parcel door spring 42
Replacement of parcel door 44
Replacement of parcel master lock 46
Replacement of parcel tenant lock assembly 48
Replacement of access door latch bracket / MLD release handle for front loading modules only 50
Replacement of shelf 52
Replacement of front master loading door slide 54
Replacement of front master loading door outer hinge 56
Replacement of rear master loading door(s) and their hold open device(s) 58
Replacement of number placard and parcel key tags 60
Replacement of trash / recycling bin flap 62
Service parts list and index 64

60,000+ Satisfied Customers

and counting...
What Makes Us Different?

With 16,000+ Satisfied Customers, our biggest asset is undeniably our team!. We have outstanding customer service reps that are some of the friendliest and most knowledgeable in the industry.

We value our customer's time; because of this, we are committed to the easiest ordering process imaginable. As a result, past customers love our prompt service and delivery, our expertise, and easy checkout process.

Even though we are known for easy ordering, we're constantly working towards creating an even easier checkout process that allows you to save more time and feel more confident in your buying decision.

Lowest Prices - We work hard to cut marketing expenses, so that we can re-invest that money into lowering our prices. Our business strategy is knowing that if we can give you the best value on the internet, with outstanding service, then you'll tell your friends about us. In our opinion, this is the best form of marketing.

High Quality Products - Our buying team works hard to make sure that every single product featured in our catalog and websites are of the utmost quality. If a manufacturer is producing low quality products, we won't feature them.

Prompt Delivery - We value your time, so we work hard with our manufacturers to process your order within 24 hours. Often times, we can process your order the same day.

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