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 Buy Replacement Locks factory direct from mailboxesCommercial mailboxes usps approved  The Freestanding Depot Enclosure with 4C Horizontal Mailbox is ideal for use at colleges, schools, private postal centers, corporate mail centers, military bases, government agencies, and many other

Working Days/Hours: Mon - Fri: 6 a. USPS-Approved Commercial Mailboxes in South Carolina. S. Wholesale Pricing $ 2,523. The USPS-Approved full service curbside delivery vault mailbox has a large compartment for frequent correspondence and a parcel delivery box. $495. S. Commercial Mail Boxes USPS Approved Mailboxes . $2,277. When it comes to commercial mailboxes for sale in Oklahoma, you won’t find better selection, service—or prices—anywhere. the RIGHT mailbox. Specializing in both high-security, USPS Approved commercial mailboxes for U. 39. Cluster Mailboxes for Sale - USPS Approved. Local: 262-782-6510 Toll Free: 800-571-0147. Find a variety of USPS approved mailboxes for new construction, renovation or replacement projects, including cluster, horizontal, vertical, locking and parcel delivery. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. Rack Ladder System – with rear loading options and a variety of door sizes. US Mail Supply carries a selection of outdoor commercial mailboxes approved for both private and USPS delivery. Add to Cart. Colors apply to select mailboxes which include most of the primary USPS Approved commercial mailbox product lines including the NEW 4C Series and CBUs. The centennial mailbox by Architectural Mailboxes is the first design to receive united states postal service approval against the new USPS standard 7C regulation, released in. Wholesale Pricing $ 3,268. Approved. N1031083. Give us a call anytime, we would love to hear from you!Colors apply to select mailboxes which include most of the primary USPS Approved commercial mailbox product lines including the NEW 4C Series and CBUs. Description. Cluster Mailboxes - usps approved -. Whether you need one for residential or commercial use, these vault mailboxes can hold up to 2+ weeks of mail and parcels while you're away for weekends and vacations. These regulations also apply to Post Mounted Mailboxes and Locking Mailboxes. S. Vault drop boxes offer convenience for residential and commercial purposes. S. Get details on package mailbox sizes and proper installation, plus find retailers that sell USPS ® approved parcel mailboxes. US Mailboxes is committed to continuing the values of maintaining a high quality service in a prompt and timely manner. 75 inches deep by 48. Wholesale Pricing $ 2,072. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. We make a concerted effort to connect people with the best mailbox solution for their commercial property and budget. 5 inches wide by 18. 5 inches wide by 18. In business since 1936, Salsbury Industries is home to both our mailboxes. Only smaller-sized packages will fit inside a collection mailbox due to the slot size. P. 2. Skip to content. Colors apply to select mailboxes which include most of the primary USPS Approved commercial mailbox product lines including the NEW 4C Series and CBUs. Manufacturer: Florence Mailboxes. From apartments and condominiums to gated communities, townhomes, multi-family units, and single-family homes, our mailboxes can be customized to fit your unique needs. The flap should not obstruct the mail carriers ability to quickly deliver your mail. 2. Postal Service will only deliver to your mailbox if it's up to their standards - including box size, location, slot dimensions and identification info. approved and available as front loading units or rear loading units. Product Line Features: USPS Approved for Replacement of Existing Wall Mounted Mailboxes. Rated 4. At BudgetMailboxes. Vertical Mailbox - 3 Doors - Surface Mounted - USPS Access. US Mailboxes offers top quality commercial and residential security mailboxesfor the best protection against vandalism,. Postal Service will only deliver to your mailbox if it's up to their standards - including box size, location, slot dimensions and identification info. USPS-Approved Commercial Mailboxes in Virginia. The industry leader in the manufacturing and distribution of quality commercial mailboxes and residential mailboxes, Salsbury Industries is officially licensed by the USPS to manufacture Cluster Box Units (CBU’s). Residential and commercial mailboxes must meet specific USPS requirements, including box size, location, mail slot dimensions (when applicable), and identification information. Mail house residential mailboxes are accessed from the front through a 13″W x 9″H locking door. Local: 262-782-6510 Toll Free: 800-571-0147The Salsbury Standard Cluster Mailbox and Regency® Decorative CBU Type I, Type II, Type III, Type IV, Type V, Type VI and Outdoor Parcel Lockers (OPL's) are all licensed and approved by the U. FAQs Request a Quote Contact. N1029455. One of our most popular products is the Cluster Box Units (CBU). USPS Approved Commercial & Community Mailboxes. Colors apply to select mailboxes which include most of the primary USPS Approved commercial mailbox product lines including the NEW 4C Series and CBUs. STD-4C Horizontal. They are front loading style and include parcel locker compartments for packages, an outgoing mail compartment for outgoing mail and pedestal stands for mounting. S. Model # CBU-8. 00 As low as $2,019. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. 1 Approved Models – A list of manufacturers whose mailboxes have been approved by the United States Postal Service (USPS) will be published annually in the Postal Bulletin. S. Give your tenants a safe and private place to collect their mail. Colors apply to select mailboxes which include most of the primary USPS Approved commercial mailbox product lines including the NEW 4C Series and CBUs. delivery, including cluster box units (CBUs), 4C horizontal mailboxes, 4B horizontal mailboxes, 4B+ horizontal mailboxes and more. Availability: In stock. Sort By: PEDESTALS SOLD. 20 Tenant Doors with 2 Parcel Lockers and 1 Outgoing Mail – Freestanding Depot Enclosure with 4C Horizontal Mailbox Unit (USPS Approved) – H4C16D-20-D. And all powder coated paint finish colors are weather resistant, rust proof and corrosion. 50. Outdoor Mailboxes; Indoor Mailboxes;Designed for replacement and retrofit installations, Salsbury 4B+ horizontal style commercial mailboxes are ideal for apartments, condominiums and office buildings. Neat, attractive mailboxes make a significant contribution to the appearance of the countryside and streets in suburban areas. Pedestal-mounted USPS-approved CBU. They are USPS Approved for replacement only although local post office approval is still required. Choose from freestanding, wall mount, cluster, and parcel lockers. EMPTY. With its durable construction, ample space, and advanced security features, this USPS-approved mailbox unit is the perfect solution for your residents' mail delivery needs. approved; Manufactured by Salsbury Industries to USPS-STD-7B specifications; Made entirely of aluminum; Feature both a front and rear access locking door; Include a lock with 2 keys on each door (keyed alike)American Mailboxes USA specializes in USPS approved mailboxes, with over 450 designs and the option to customize. National Mailboxes offers a wide selection of high quality USPS Approved and private use-access style Pedestal Mailboxes. Postal Carrier to install their arrow lock for the master door (this allows the postal carrier to deliver mail to all individual. You can find our mailboxes in apartments, high schools, post offices, and hospitals across Colorado. S. Some of our most popular styles include: Cluster mailboxes. Colors apply to select mailboxes which include most of the primary USPS Approved commercial mailbox product lines including the NEW 4C Series and CBUs. Mailboxes used in new construction projects can be one of the following two types of centralized mailbox equipment: a. Wholesale Pricing $ 444. USPS approved 8 door cluster mailbox - The Florence vital™ 1570-8 F-series is the perfect outdoor pedestal mailbox for apartments and commercial buildings. SKU. Tenant Compartment Size: 5-1/2″W x 16″H x 6″D. PEDESTALS SOLD SEPARATELY. com. 3308-U. Rated 4. Colors apply to select mailboxes which include most of the primary USPS Approved commercial mailbox product lines including the NEW 4C Series and CBUs. SKU. These mail drop boxes are sturdy, safe and most importantly approved for use by the United States Post Office. And all powder coated paint finish colors are weather resistant, rust proof and corrosion. 00 $51. The USPS-4C Standard includes a minimum size requirement for mailboxes of 12” W x 15” D x 3” H. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. We even have vertical options, like the Salsbury 3503RP and 3308-P, for small properties. Regulations for Residential and Commercial Mailboxes. Shop online or call: 800. The cluster box itself measures 30. 00 (19%) 4 Door Parcel Locker Cluster Mailbox. And all powder coated paint finish colors are weather resistant, rust proof. Postal Service-approved model features a compact design and sturdy post. Commercial mailboxes have been the cornerstone to the National Mailboxes product line for many decades which supplies, manufacturers, and distributes a wide selection of multi-tenant commercial mailboxes. Manufactured of Heavy Duty Aircraft Aluminum and Stainless Steel for Added Durability. Regency Outdoor Parcel Locker (Includes Pedestal, CBU Top and Pedestal Cover - Short) - 4 Compartments - USPS Access. 71 out of 5 based on 14 customer ratings. $2,079. The Postal Service annually publishes a list of USPS-approved mailbox equipment and approved manufacturers in its Postal Bulletin. For more product info contact the National Mailboxes Customer Support Center at 1-800-676-5161. Commercial Mail Boxes USPS Approved. S. $3,159. $3,119. Includes a single parcel compartment. Colors apply to select mailboxes which include most of the primary USPS Approved commercial mailbox product lines including the NEW 4C Series and CBUs. Colors apply to select mailboxes which include most of the primary USPS Approved commercial mailbox product lines including the NEW 4C Series and CBUs. 00 Free Shipping. If you need a large or specialized order, such as for college dorms, hospital patients, or nursing home residents, please call us at (866) 707-0008. Salsbury 3300 Series Cluster Box Units (CBU's) are available as standard units, Regency Decorative units (with a decorative top and pedestal cover) or as Outdoor Parcel Lockers (OPL's). Made entirely of aluminum, 4C horizontal mailboxes are U. Local: 262-782-6510 Toll Free: 800-571-0147 Commercial Mailboxes. The Salsbury recessed mounted 4C horizontal mailboxes come in four different heights: six door high, ten door high, eleven door high, and Maximum Height units. And all powder coated paint finish colors are weather resistant, rust proof and corrosion. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. USPS approved replacement commercial horizontal mailboxes from US Mail Supply are ideal for use in offices, schools, and apartment lobbies. CBUs are available in (6) weather-resistant powder coat finishes and come in (6) pre-configured units. S. All tenant locks and keys are included and a wide selection of color finishes are also available. Commercial & Multi Tenant Mailboxes | USPS Approved Call Our Experts Today (866) 717-4943Free Shipping Over $30 Cart Bulk Pricing About Us Contact Us Blog. S. 00. We have a wide range of styles and brands for both residential and commercial use. Commercial building mailboxes manufactured by Salsbury Industries are made of heavy duty aluminum and come in a variety of sizes and colors. Parcel lockers need to exist at a 1:10 parcel to customer compartment ratio. com. Contact US Mail Supply for more information on USPS approved commercial mailboxes. And all powder coated paint finish colors are weather resistant, rust proof. The Freestanding Depot Enclosure with 4C Horizontal Parcel Locker from National Mailboxes provides the perfect solution for your stand-alone installation needs. 9 Door Standard 4C Mailbox with 1 Parcel Door. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. 4C mailboxes are USPS Approved and meet or exceed STD-4C re. Introducing the New "F" series CBU -- designed to meet or exceed new USPS Security Standards. Shop wall-mounted 4C commercial Mailboxes for sale from U. Whether you are a property manager, HOA, contractor, land developer, apartment complex owner / manager, an architect, or work for a university, you have come to the right place for pre-configured commercial mailboxes. CBU Commercial Mailboxes - 8 Door with 4 Parcel Lockers. Ideal for commercial buildings, multi-family housing units, apartment complexes, government and military bases, schools, colleges and other. S. Commercial Mailboxes. 4 Oversized Tenant Doors with 1 Parcel Locker and 1 Outgoing Mail – 4C Wall Mount 8-High Horizontal Mailbox Unit – H4C08D-04. These mailboxes are designed for multi-tenant applications where the U. Contact U. Mail Chests are made entirely of aluminum, are approved for U. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. Residential & commercial mailboxes for sale in Pennsylvania. Colors apply to select mailboxes which include most of the primary USPS Approved commercial mailbox product lines including the NEW 4C Series and CBUs. CBUs include secure tenant doors, an outgoing mail slot, and parcel. 4C Mailbox Depot. 97 out of 5. Postal Carrier to install their arrow lock for the master door (this allows the postal carrier to deliver mail to all individual units within the. 3504. 00 Free Shipping. Door Size: 5″H x 6-3/8″W. Cluster Box Units (CBU’s) 4C Horizontal Mailboxes. EMPTY. Cluster Mailboxes are approved for use throughout the U. S. We offer a wide selection of high quality apartment mailboxes , CBU mailboxes ( cluster box units ), horizontal mailboxes, vertical mailboxes, pedestal and wall mounted mailboxes as well. A USPS Approved mailbox refers to any commercial or residential mailbox that is pre-approved by the Post Office prior to proper installation. We offer a wide selection of high quality apartment mailboxes , CBU mailboxes ( cluster box units ), horizontal mailboxes, vertical mailboxes, pedestal and wall mounted mailboxes as well. Contact Us. All tenant door locks and keys are included. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. The Freestanding Depot Enclosure with 4C Horizontal Mailbox from National Mailboxes provides the perfect solution for your stand-alone installation needs. Colors apply to select mailboxes which include most of the primary USPS Approved commercial mailbox product lines including the NEW 4C Series and CBUs. FAQs Request a Quote Contact. 00 out of 5. S. Pre-approved by the USPS, cluster commercial mailboxes are considered the industry standard when it comes to outdoor, centralized mail delivery. Narrow Results. As this local approval trend continues, many in the industry wait to see if the USPS will ultimately grant certification to the 4C pedestal mailbox. Colors apply to select mailboxes which include most of the primary USPS Approved commercial mailbox product lines including the NEW 4C Series and CBUs. And all powder coated paint finish colors are weather resistant, rust proof. Florence 4C Mailboxes 4C08S-HOP Collection and Drop Box. You save: $367. USPS Approved Cluster Mailboxes for Commercial or Residential with Free Shipping & Volume Discounts - only at Mailbox Directs. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. Florence 1570-16AF. Made entirely of aluminum, Salsbury 3500 series USPS approved 4B vertical mailboxes feature a durable powder coated finish available in three (3) contemporary colors, aluminum. Explore our site and you will find the largest selection of USPS approved mailboxes and private delivery mailboxes in the industry. Wholesale Pricing $ 2,763. If you run an apartment complex, you likely have a lot of tenants that need mail. High Quality USPS Approved Commercial Mailboxes. Email Us: Submit a Ticket. $2,210. Depending on your location's requirements, we offer USPS approved and private delivery options as well. Wholesale Pricing $ 1,678. 00 Free Shipping. com and lockers. 00. Model # 3308R-U. 4C horizontal mailboxes. And all powder coated paint finish colors are weather resistant, rust proof. Regency ® Decorative Cluster Boxes manufactured by Salsbury Industries provide USPS access and offer a secure means of receiving mail and packages. Quantity: Page 1 of 2 1 2 Next. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. 00. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. We give additional discounts on USPS approved large security mailbox purchases. Many models include parcel lockers and letter drops for outgoing mail. Colors apply to select mailboxes which include most of the primary USPS Approved commercial mailbox product lines including the NEW 4C Series and CBUs. This includes mail that fits into regular envelopes and can fit into a 12” wide, 15” deep outgoing mail compartment. S. If you do not have a raised curb, contact your local postmaster for guidance. 00. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. 4C Horizontal Mailboxes; Aluminum Style Mailboxes; Brass Style Mailboxes; Free-Standing Mailboxes. Colors apply to select mailboxes which include most of the primary USPS Approved commercial mailbox product lines including the NEW 4C Series and CBUs. 12 Tenant Door Classic Decorative High Security CBU Mailbox with 1 Parcel Locker (Pedestal Included) – Type 2 USPS Approved – H1570-12AF-DC. Learn More. S. These units are perfect for your stand alone delivery and collection needs with absolutely no wall space requirements. As a USPS approved manufacturer, Salsbury Industries conveniently sells USPS Approved Cluster Box Units (CBU's) factory direct. Salsbury Regency ® Decorative Cluster Mailboxes. And all powder coated paint finish colors are weather resistant, rust proof and corrosion. Most bulk order sales are usually processed through our quote system. +-ADA MAX Suite (37 1/4"H) - (1 to 10 USPS Approved Mailboxes) +-9-Door High Suite (33 3/4"H) - (2 to 16 USPS Approved Mailboxes) +-8-Door High Suite (30 1/4"H) - (1 to 14 USPS Approved Mailboxes). 16 Door Cluster Mailbox - CBU (Pedestal Included) - Type 3 USPS Approved Mailboxes - 1570-16AF. Add to Wish. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. 5's and 1 PL5 - Front Loading - USPS Access Model # 3716D-15 $2,950. Working Days/Hours: Mon - Fri: 6 a. These high security USPS approved cluster box units (CBU. Our USPS. $ 2,574. com, we have cost-effective and space-saving mailboxes that meet your needs. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. Shop By Application. The USPS. Colors apply to select mailboxes which include most of the primary USPS Approved commercial mailbox product lines including the NEW 4C Series and CBUs. Black Filled Engraved Number Plates. in all weather conditions, making it the primary external delivery system for the USPS. $2,079. Manufacturing Since 1936. Manufacturing Since 1936. USPS-approved cluster box mailboxes come with eight to sixteen doors. Mailboxes. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. Mail Supply. They are designed with elegance in mind, and are ideal for commercial developments and residential neighborhoods. They can be surface mounted or they can also be mounted on bolt mounted mailbox posts (H4765), in-ground mounted mailbox posts (H4795), or a base of your selection. FAQs Request a Quote Contact. 0147. Our biggest front loading mailbox has 35 doors. $1,348. Feature a durable powder coated finish available in sandstone, bronze, green, black, white and gray (for replacement units only) Include 2 or. Ideal for commercial buildings, multi-family housing units, apartment complexes, government and military bases, schools, colleges and other. A USPS Approved mailbox refers to any commercial or residential mailbox that is pre-approved by the Post Office prior to proper installation. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. Post-Mounted: $375 to. 50 View Options. These . And all powder coated paint finish colors are weather resistant, rust proof and corrosion. 20 Tenant Doors with 2 Parcel Lockers and 1 Outgoing Mail – Freestanding Depot Enclosure with 4C Horizontal Mailbox Unit (USPS Approved) – H4C16D-20-D. 2 Oversized Tenant Doors with 1 Parcel Locker and 1 Outgoing Mail – 4C Wall Mount 6-High Horizontal Mailbox Unit – H4C06D-02. Parts: We sell replacement parts for this product. Postal Service will only deliver to your mailbox if it's up to their standards - including box size, location, slot dimensions and identification info. Add to Wish List. Related Items. For more detailed specifications, please view this Technical Drawing. S. Our selection of pedestal mounted and cluster outdoor mailboxes are built to USPS standards and resist rain, snow, and more. Contact us online , or call (541) 389-4928 for more details. Explore our site and you will find the largest selection of USPS approved mailboxes and private delivery mailboxes in the industry. Wholesale Pricing $ 1,808. Commercial Mailboxes. Approved - master postal lock not required. USPS Approved Full Service Delivery Vault This full-service vault provides a secure, extra-large drop section for large items, a secure mail drop, and an enclosed space for outgoing mail. 00 (20%) Free Shipping. Contact Us. Fit More in Your Extra-Large Mailbox. For more product info contact the National Mailboxes Customer Support Center at 1-800-676-5161. Colors apply to select mailboxes which include most of the primary USPS Approved commercial mailbox product lines including the NEW 4C Series and CBUs. Colors apply to select mailboxes which include most of the primary USPS Approved commercial mailbox product lines including the NEW 4C Series and CBUs. Mail Supply today or call us at 262. P. 8. S. Colors apply to select mailboxes which include most of the primary USPS Approved commercial mailbox product lines including the NEW 4C Series and CBUs. The industry leader in the manufacturing and distributing of quality commercial and residential mailboxes and lockers, Salsbury Industries’ manufacturing facilities are vertically integrated to ensure that you receive quality products that are manufactured and shipped in a timely. USPS Approved and Postal Certified for US Mail Delivery. S. CALL: 800. Every secure mail dropbox we carry is made for commercial use, but can also be used for. If you need a large or specialized order, such as for college dorms, hospital patients, or nursing home residents, please call us at (866) 707-0008. Curbside and roadside mailboxes must be easily accessible to the mail carrier. And all powder coated paint finish colors are weather resistant, rust proof and corrosion. 3. Colors apply to select mailboxes which include most of the primary USPS Approved commercial mailbox product lines including the NEW 4C Series and CBUs. 86 out of 5. has proudly served the United States Post Office for nearly twenty years. Wall-Mounted: $100 to $300 for 2-6 boxes and $455 to $1,200 for larger units. Front Loading Style. $ 1,806. High-quality CBU Commercial Mailboxes (NEW 1570 F-Series Type) The Standard Style Cluster Box Units (CBU) from National Mailboxes are designed to meet or exceed the new USPS Security Standards. 16 Tenant Door Standard Style High Security CBU Mailbox with 2 Parcel Lockers (Pedestal Included) – Type 3 USPS Approved – H1570-16AF. Wholesale Pricing $ 2,072. 00 $1,878. USPS Approved Mailboxes for Apartment Buildings. When sending outgoing mail, customers simply need to drop it off at the mail slot. Flexible, customizable solution for individual project needs. For more product info contact the National Mailboxes Customer Support Center at 1-800-676-5161. The USPS-approved 1400 series makes efficient use of your wall space. $450. $60. US Mail Supply offers a wide variety of USPS-approved mailboxes for homes and businesses. Our company offers a wide variety of USPS approved products and all of our mailboxes are delivered fully. Salsbury 3316. 00 $2,100. Mailbox Cost: $14 – $50, $25 – $75. Frequently Asked Questions about. Centralized mailboxes fit this need. Salsbury 3312-U 12 Door Cluster Mailbox - USPS Approved (Includes Pedestal) See More by Salsbury Industries. PEDESTALS SOLD SEPARATELY. Rated 5. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. Postal Carrier to install their arrow lock for the master door (this allows the postal carrier to deliver mail to all individual. Shop online or call: 800. Mailboxes are U. Browse our wide selection of mailboxes & get free. Modular designs with nearly 150 base modules. S. Buy USPS Approved Apartment Mailboxes for Sale Online from U. An approved Cluster or 4C Horizontal unit will be prepped for the U. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. View All Products. Shop Recessed Cluster Mailboxes - USPS Approved and save on your next residential or commmercial mailbox project. Designed to protect the mail from weather. 00 As low as $1,597. An approved Cluster or 4C Horizontal unit will be prepped for the U. New communities and commercial complexes will need USPS mail delivery. These large aluminum commercial mailboxes provide secure mail delivery with a locking 5-pin cam lock on each door. S. com, we offer residential mailboxes that can withstand these conditions. Postal Service. And all powder coated paint finish colors are weather resistant, rust proof and corrosion. Multi-family mailboxes ensure centralized mail delivery and protect valuables from countless threats. Quantity: Page 1 of 1 1. Ideal for commercial and residential developments. 00USPS-Approved Centralized Florida Mailboxes. All high quality powder coated finishes are rated and approved for outdoor/indoor use and installations. Private Commercial Mailboxes. Postal Service STD-4C compliant mailbox systems. Tenant Door Size: 5″H x 6-3/8″W x 16″D. 00 (19%). Made entirely of aluminum, 3700 series 4C horizontal mailboxes are U. Commercial USPS-Approved Mailboxes in Wisconsin. Small business and homeowners alike can delight in knowing that their mail will be protected in their Roadside Locking Mailbox from National Mailboxes. Ideal for homes, colleges, schools, apartments, condominiums, office buildings, corporate mail centers, military bases and many other applications. 00 Free Shipping. A good time to do this is during renovations of the property. 50 View Options. Choosing a USPS-approved mailbox ensures reliability, security, and compliance, helping you maintain a smooth flow of communication for your business. Learn More. Free-Standing 4C Horizontal Mailbox Unit (Includes 3716D-6P Parcel Locker, 3916D Enclosure and Master Commercial Locks) - Maximum Height Unit (72 1/8 Inches) - Double Column - Stand-Alone Parcel Locker - 2 PL4.