782. Model # 4C13D-07. The USPS requires central mailboxes for all new or remodeled apartment houses. We manufacture, supply, and distribute a wide selection of residential mailboxes, both indoor and outdoor models, to residential home owners and home owners associations across the country. 00. 00 $318. Horizontal 4C mailboxes are USPS approved (STD-4C) and 4C depot style mailboxes are for private deliveries only. S. Antique Brass Mailboxes are made of solid brass and are handcrafted. These units are for indoor use only in small multi-family buildings & apartments. USPS Approved Apartment Cluster Boxes & STD-4C Mailboxes . Property owners can appoint a manager to ensure the mailbox meets postal service regulations. Local: 262-782-6510 Toll Free: 800-571-0147. 6 specifies postal regulations regarding mailbox locations for apartment houses and other multiple-unit dwellings. Commercial properties, which can be businesses, apartment complexes, retirement communities, and similar areas, can best make use of centralized mail systems. US Mail Supply has a vast selection of USPS-approved mailboxes for new construction and also for replacement. U. Versatile Front Loading Commercial Mailbox with 7 Tenant Compartments and 2 Parcel Lockers - Double Column. Learn More: Mailbox FAQsThe need for safe and reliable delivery of mail and packages is a must in every state, including Indiana. Mail Supply carries the best selection of indoor & outdoor mailboxes for North Carolina apartments & businesses. The cluster box itself measures 30. S. The standards for an approved door slot are: The opening must be at least 1 1/2″ x 7″. Local: 262-782-6510 Toll Free: 800-571-0147. The Salsbury recessed mounted 4C horizontal mailboxes and parcel lockers are U. High Security CBU Mailboxes. Search. 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. A USPS Approved Cluster Mailbox (a CBU or Cluster Box Unit) is a centralized multi-tenant mailbox system typically used in multi-unit residential or commercial developments, such as apartment complexes, HOAs, or office parks. The older 4B models also exist,. Model # 3503. With the patented Fast-Trak© Mounting Plate, you can quickly and easily install your high security mailbox on a Mail Boss In-Ground or Surface Mount Post (sold separately), or mount it on an existing post, platform, or gang plank. Supplies Cost: $10 – $25, $15 – $40. Such a rule prevents damage to vehicles and. Outdoor Parcel Locker with Pedestal Stand - 2 Parcel Lockers. The 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. USPS Approved California Commercial and Centralized Mailboxes. Often, commercial mailboxes, which have multiple customer compartments in the same. 97 Free Shipping. Vertical Mailbox - 3 Doors - Surface Mounted - USPS Access. National Mailboxes is a division of NMHP Inc. and these types are typically USPS-approved and good for apartments and other properties that already use 4C or 4B centralized mail delivery. Custom solutions. Model # CBU-12. HOA Mailboxes. 1. 4B+ Front-Loading Horizontal Mailboxes - 4 Parcel Lockers. If you’re worried about your tenants being able to reach your mailboxes or your carrier being able to load them, you’re on the right track. Postal Service ® and its federal law enforcement arm, the U. Front Loading Style. 4C Pedestal Mailboxes. USPS Approved Mailboxes . Cabinets are for private use, meaning non-USPS use. Postal Service. The 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. Aluminum Surface-Mounted USPS Access Vertical Mailbox with 5 Doors. National Mailboxes is a division of NMHP Inc. Ideal for commercial buildings, multi-family housing units, apartment complexes, government and military bases, schools, colleges and other. There is a 2-wide, 3-wide, and 4-wide spreader plate which allows you to mount as many as four residential mailboxes to one pedestal or post. Small business and homeowners alike can delight in knowing that their mail will be protected in their Roadside Locking Mailbox from National Mailboxes. We manufacture the highest quality postal products—residential mailboxes, commercial mailboxes, apartment mailboxes, cluster box units, mail center products, locking mailboxes, mailboxes approved directly by and made for the United States. 1400 Series Front-Loading Horizontal Mailboxes - 9 Double Wide Tenant Doors and 1 Master Door. You save: $367. Model # 4C15S-HOP. Salsbury 3312-U 12 Door Cluster Mailbox - USPS Approved (Includes Pedestal) See More by Salsbury Industries. 8 Door Cluster Mailbox - USPS Approved - Pedestal Included. Mail Supply carries the best selection of indoor & outdoor mailboxes for Utah apartments & businesses. $889. Categories. Constructed of heavy-duty steel with tested and secure locks, our apartment mailboxes are customizable with different designs and accessories to fit your particular aesthetic. FAQs Request a. Each box can cost $1,000 or. Postal Carrier to install their arrow lock for the master door (this allows the postal carrier to deliver mail to all individual. Local: 262-782-6510 Toll Free: 800-571-0147 FAQs Request a Quote Contact Both USPS approved mailboxes for U. Local: 262-782-6510 Toll Free: 800-571-0147. In fact, the government agency says that postal service officials must not install Arrow locks on new NDCBUs, and letter carriers must not deliver mail to any replacement NDCBUs. At least one customer compartment is no more than 4 feet (48 inches) off the floor. S. (Say, dropping off a Priority or Express package,. Be sure go over these factors before deciding on wall-mounted mailboxes. Front Loading Commercial Mailbox - 3 Parcel Lockers. Supplies Cost: $10 – $25, $15 – $40. Postal Service will only deliver to your mailbox if it's up to their standards - including box size, location, slot dimensions and identification info. FAQs Request a. USPS approved 8 door cluster mailbox - The Florence vital™ 1570-8 F-series is the perfect outdoor pedestal mailbox for apartments and commercial buildings. New Construction. Key notes about the USPS 4B Mailbox: Due to a 2006 updated USPS ruling, the 4C is the current requirement for all new construction projects. 1570-16AF - 16 Tenant Door Standard Style CBU Mailbox (Pedestal Included) - Type 3 USPS Approved Mailboxes $2,149. US Mail Supply has a vast selection of USPS-approved mailboxes for new construction and also for replacement. $1,999. Mail Supply. The rules for mailbox installation in Hawaii are the same as in the rest of the US. USPS Approved Commercial, Apartment, & Residential Units The U. Choose between USPS-approved options or private-use designs for tailored convenience. S. S. S. S. Neighborhood Delivery and Collection Box Units make it easy for delivery to multiple residences at once. These locking mailboxes are mounted on a pedestal. Average Cost Estimate: $135 – $435. If you’ve looked at commercial mailboxes on the National Mailboxes website, you may have noticed that some are labeled USPS-Approved or For Private Delivery. Constructed and Manufactured of Heavy Duty Extruded Aluminum. Custom solutions. USPS-Approved. S. These standard stock units include parcel lockers and locking outgoing mail collection providing a convenient, secure method of mail and package delivery to residents in a centralized location. 1400 Series Horizontal mailboxes are USPS Approved for replacement purposes only – Check with your local Postmaster prior to ordering! They come in 3-Door, 4-Door, 5-Door, 6-Door, and 7-Door configurations. EMPTY. 1400 Series Horizontal mailboxes are USPS Approved for replacement purposes only – Check with your local Postmaster prior to ordering!. If locks are broken, your mail carrier can’t legally deliver to those compartments or units. Postmasters do not have the authority to approve mail-box systems, such as USPS-STD-4C wall-mounted unitsUSPS-Approved New Hampshire Mailboxes for Commercial Properties. Providing USPS Approved Alabama Mailboxes. New High Security 4C Series. has proudly served the United States Post Office for nearly twenty years. Mail Supplytoday for questions regarding ordering, or call 262. Postal Service will only deliver to your mailbox if it's up to their standards - including box size, location, slot dimensions and identification info. Type 1 NDCBU Mailbox Unit Size: 55-1/8"H x 13-15/16"W x 15"D (Height includes Pedestal) Colors: Standard color is Anodized Aluminum/Silver Features: Tenant Door Size: 5”high x 6”wide x 15”deep 4 Doors High x 2 Doors Wide 8 Doors Numbered 1-8 All Tenant Locks and Keys are Included Pedestal Included If for USPS Use/Access: Local Postmaster. USPS Approved Mailboxes . 97 Free Shipping. The local postal manager must approve the mailbox sites and type of equipment. USPS approved 12 door cluster mailbox - The Florence vital™ F-series is the perfect outdoor pedestal mailbox for apartments and commercial buildings. FAQs Request a. If you’re planning on building or remodeling an apartment clubhouse, it is an excellent place to put your centralized mailboxes. 5 in. 3312-U. Ensuring Security of Apartment Mailboxes. Bulk Pricing;U. Learn More. A USPS Approved Cluster Mailbox (a CBU or Cluster Box Unit) is a centralized multi-tenant mailbox system typically used in multi-unit residential or commercial developments, such as apartment complexes, HOAs, or office parks. 75. Shop locking mailboxes. Mail Supply. 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. $2,379. $3,961. Both types are integral for enhancing the curb appeal, and therefore the value, of a home. 00 Free Shipping. You save: $367. BEST OVERALL: Mail Boss Curbside Locking Mailbox. Properties such as apartment complexes, communities, and large commercial properties will need to make use of a larger, centralized mail system for best results. Salsbury 3316-U 16 Door Cluster Mailbox - USPS Approved (Includes Pedestal) See More by Salsbury Industries. Additionally, mail slots on doors aren’t approved for apartment complexes. We give additional discounts on USPS approved large security mailbox purchases. Apartment Mailboxes. By USPS regulatory standards, your mailbox should be 41” to 45” from the ground or street surface and up to the inside floor of the mailbox. Made of heavy-duty steel and aluminum,. 00. The industry leader in the manufacturing and distributing of quality commercial and residential mailboxes, Salsbury Industries is officially licensed by the USPS to manufacture Cluster Box Units (CBU’s). Mail Supply carries the best selection of indoor & outdoor mailboxes for Hawaii apartments & businesses. Postal Service-approved model features a compact design and sturdy post. Postal Products Unlimited wants you to specifiy our high quality, USPS approved mailboxes for your next big project. FAQs Request a. Florence 4C Mailbox Suites are a secure, attractive and easy-to-use line of wall-mounted mailboxes and parcel lockers. 15 (3) Model# 12506SMSHA. S Mail delivery and private use-access style commercial mailbox models for private party mail distribution. This requirement has been in place since 2019,. USPS has also outlined how high a landlord can install mailboxes. Decorative Crown Cap 4 Door CBU Mailboxes with Extra Large Tenant Doors. More Info About Wall Mounted Mailboxes. O. Custom solutions. 97 Free Shipping. Vertical mailboxes, which usually contain 5-10 compartments each, can be mounted or recessed into a wall. The entire Versatile (TM) 4C mailbox line may be used for private delivery, if desired. P. S. Wall-mounted mailboxes are. 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). m. When it comes to commercial properties and some communities, such as apartments or condos, some form of centralized mail delivery is often needed to meet the needs of. Indoor or outdoor use. Local: 262-782-6510 Toll Free: 800-571-0147. New Construction. These mailboxes are common in lobbies and indoor mail delivery centers. USPS-approved models are available for virtually every mail delivery situation. Mail Supply carries the best selection of indoor & outdoor mailboxes for Illinois apartments & businesses. U. $1,768. 00. Model # 4C13D-13. O. Front Loading Commercial Parcel Locker Mailbox. 53 Married Student. Commercial Mailboxes. We carry residential post mailboxes, indoor mailboxes, wall mounted residential mailboxes, and everything in between. USPS-Approved. 2-2 Find Your Local USPS Growth Manager; 2-3 USPS-Approved Mailbox Equipment; 2-4 Delivery Planning Resources for Builders and Developers; 3 General Planning Guidelines for Mailboxes in New Developments. Show. S. Both are quality mailbox brands, so the selection is usually a matter of price and preference. Model # CBU-12. Learn More. Knowing the USPS apartment mailbox requirements is your responsibility as the owner of a building. US Mail Supply has a vast selection of USPS-approved mailboxes for new construction and also for replacement. $375. Salsbury Cluster Mailbox Unit with 4 Doors and 2 Parcel Lockers with USPS Access - Type V. If the lock is still stuck, contact your property manager, or replace the lock if you are the property manager. Postal Carrier to install their arrow lock for the master door (this allows the postal carrier to deliver mail to all individual. +-Locking Apartment Mailboxes +-Apartment Cluster Mailboxes +-Outdoor Mailboxes +-Vital™ F-Series Cluster Box Units. com. The Florence "F" Series. SKU. Older buildings with unsecured mail drops must replace obsolete receptacles with USPS-approved mailboxes. These mailboxes consist of one cabinet that houses multiple customer compartments, and these types of mailboxes typically. SKU: 4C16D-29. Mailboxes used in new construction projects can be one of the following two types of centralized mailbox equipment: a. from Florence Commercial Mailboxes. Post Office personnel do not distribute mail into apartment-type mailboxes for dormitories or residence halls. Built with sheet and extruded aluminum and finished in your. Our cluster mailboxes will suit any area from apartment buildings to residential areas. Custom solutions. $1,869. The only exception to this rule is where mail. Make sure your mail carrier has safe, easy access to your mailbox. USPS Approved Commercial, Apartment, & Residential Units The U. The new community mail unit may or may not have a secure mail drop box for outgoing mail. Salsbury 3312R-U 12 Door Regency Decorative Cluster Mailbox. Local: 262-782-6510 Toll Free: 800-571-0147. 30 reviews Free shipping, arrives in 3+ days0:04. Postmasters do not have the authority to approve mail-box systems, such as USPS-STD-4C wall-mounted units USPS-Approved New Hampshire Mailboxes for Commercial Properties. Compare $ 490. Centralized mailboxes must have all customer compartments between 28 and 67 inches from the ground. US Mail Supply has a vast selection of USPS-approved mailboxes for new construction and also for replacement. When it comes to commercial mailboxes for sale in Idaho, you won’t find better selection, service—or prices—anywhere else. We carry residential post mailboxes, indoor mailboxes, wall mounted residential mailboxes, and everything inbetween. 99 /box (9) Model# 3503ARU. SKU: 3312R-U. 12 Door USPS Approved Cluster Mailbox. 00. National Mailboxes is a division of NMHP Inc. $424. Curbside mailboxes must stand on the same side of the street as all others, must stand between 6 to 8 inches back from the curb, and must be 41 to 45 inches high. Stainless steel hingesPre-approved by the USPS, cluster mailboxes are considered the industry standard when it comes to outdoor, centralized mail delivery. Traditional Mailboxes are made of electro-galvanized steel and are accessed through a top lid. Front Loading Commercial Mailbox - 16 Tenant Doors and 2 Parcel Lockers - Double Column. 2. Rated 4. 4B Horizontal Mailboxes. Our Price: $1,995. EMPTY. USPS approved apartment mailboxes from US Mail Supply are constructed of aluminum, making them a safe and secure option for incoming and outgoing mail. H (12) USPS-approved Apartment Mailboxes Determining the best centralized mail delivery system for your apartment buildings can feel overwhelming with so many USPS-approved apartment mailboxes available. These codes and regulations are enforced to ensure safety and efficiency when it comes to mail delivery. Vertical Apartment Mailboxes are USPS Approved for Replacement Only (If replacing existing wall. The 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. A USPS Approved mailbox refers to any commercial or residential mailbox that is pre-approved by the Post Office prior to proper installation. 16 Tenant Door Standard Style High Security CBU Mailbox with 2 Parcel Lockers (Pedestal Included) – Type 3 USPS Approved – H1570-16AF. (Normally In-Stock) Excludes CBUs with custom numbering. Local: 262-782-6510 Toll Free: 800-571-0147. you’ll know you’ve found a collection mailbox meant for standard mail. Some cluster mailboxes come with parcel lockers already installed, while other parcel lockers may fit alongside or under mailboxes for easy access. Capacity: 0 mailbox compartments; Parcel Lockers: 4 parcel lockers with front doors; Number of Keys Included: 3 keys per mailbox and parcel locker; 5-pin lock; Master Lock: Yes, includes one private master lock for the entire mailbox unit; USPS Approved: Yes; Warranty: 5-year limited warranty against manufacturer defects. Mail Supply carries the best selection of indoor & outdoor mailboxes for Nevada apartments & businesses. Pedestal-mounted USPS-approved CBU. 00 $3,029. 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. Mail; 3-2 Mailbox Locks and Keys; 3-3 USPS Master Access Lock; 3-4 Safety ConsiderationsCluster Box Unit With Finial Cap and Traditional Pedestal Accessories -16 Compartments. “No parcel locker compartment (interior bottom shelf) shall be positioned less than 15” from the finished floor. Therefore, mailboxes must meet these needs. The Postal Service annually publishes a list of USPS-approved mailbox equipment and approved Versatile Front Loading Double Column Mailbox with 5 Tenant Doors and 2 Parcel Lockers and Outgoing Mail Slot. About Salsbury Industries. Please feel free to learn more about how cluster mailboxes work (clicking the link will take you to a different article). 05, 2006), USPS approved and installed to meet the ADA Standards. D Wall Cut Width: 39-5/8 in. Again, there must be one parcel locker for every five mailbox compartments. FAQs Request. $397. Choose from mailboxes that meet or exceed all security requirements of the USPS STD-4C regulation for wall-mounted mail receptacles. Model # 4C16S-09. These apartment. Mailbox Cost: $14 – $50, $25 – $75. $3,028. EMPTY. S. Like 4C mailboxes, they can mount side by side, allowing property managers to meet all tenant. $1,768. And all powder coated paint finish. Outdoor Mailboxes;Ensure that the flap if working properly and allows delivery. Learn More: Mailbox FAQsSpecializing in both high-security, USPS Approved commercial mailboxes for U. Place a small amount into the lock and wait just a few minutes. Colleges and Schools. Apartment Mailboxes. Local: 262-782-6510 Toll Free: 800-571-0147. Commercial Mailboxes. Florence Manufacturing; Salsbury Industries; Bulk Quotes ; Help Center ; Blog;. Box 13144, Wauwatosa, WI 53213 Phone: 800-676-5161 We are a leading Wisconsin-based manufacturer & supplier of high-quality USPS Approved & private locking residential &. Apartment Mailboxes – Wall Mount – USPS Approved for Replacement Only Multi-Unit Apartment Mailboxes – Commercial Mailboxes Multi-Tenant Apartment Mailboxes. Residential USPS Approved Mailboxes in Texas. SKU: 4C15S-3P. 8 Door USPS Approved Cluster Mailbox. Replacement Community Mailboxes. Buy USPS-approved commercial outdoor mailbox clusters for apartments, offices, companies, and businesses throughout the US. We manufacture, supply, and distribute a wide selection of residential mailboxes, both indoor and outdoor models, to residential home owners and home owners associations across the country. Our product quality is unmatched and we have a team of customer service representatives ready to help you with anything you need in terms of specifying, viewing or learning about the right mailbox for the job. $1,824. The 4B mailboxes are still approved for private use new construction application only if the intended use is for a private organization such as office buildings, apartment complexes, colleges, etc. Horizontal 4C mailboxes are USPS approved (STD-4C) and 4C depot style mailboxes are for private deliveries only. Publication 265-D March 2019 ® T o ensure that apartment mailboxes are safe from tampering by thieves, the U. Beautiful apartments attract more interested renters (and can even make you more money). Fit More in Your Extra-Large Mailbox. U. As a USPS approved manufacturer, Salsbury Industries conveniently sells USPS Approved Cluster Box Units (CBU's) factory direct. Your residents will be delighted to use our beautiful, long-lasting residential mailbox options. 00. S. Locking cluster mailboxes come in a variety of colors and sizes to fit your unique property setting. $2,159. 00 As low as $987. Residential, commercial 4C, USPS-Approved, private use, & more. The new USPS-4C Standard includes the following specifications: A new minimum size requirement for mailboxes (12"W x 15"D x 3"H). NOTE: Standard Horizontal Mailboxes are USPS Approved ONLY for Replacement of Existing Wall Mount Mailboxes. Search the blog. Mail Supply offers various USPS-approved mailboxes for apartment buildings or multi-unit complexes. FAQs Request a Quote Contact. Postal Service. Mailbox includes surface mount collar for flush wall mounting. Model # 3308R-U. 00 Free Shipping. 2-3 business days plus transit time. 00 As low as $2,224. USPS-Approved. The Depot can be installed outside or inside and is designed to ensure the. e. Affordable Decorative Municipal Quality Street Light Package - LED. You may continue to use a 4B configuration after a renovation, provided the mailbox housing or. Mail Supply carries the best selection of indoor & outdoor mailboxes for Massachusetts apartments & businesses. Mail Supply offers various USPS-approved mailboxes for apartment buildings or multi-unit complexes. SKU # 1570-16. Learn More: Mailbox FAQsIndiana USPS-Approved Commercial Mailboxes. Ideal for commercial buildings, multi-family housing units, apartment complexes, government and military bases, schools, colleges and other. The good news is that outgoing mail capacity for residential rental properties, such as apartments and other communities, is often included with certain types of mailboxes that will be needed to manage incoming mail for such properties. Unit Size: 12-1/2″W x 13-5/8″H x 18-1/4″D. USPS Approved Commercial, Apartment, & Residential Units The U. Categories: Apartment Mailboxes. The regulation says any post-mounted or wall mount. Mail Supply carries the best selection of indoor & outdoor mailboxes for New York apartments & businesses. Model # 140054A. An exception to this is a curbside mailbox. Mail Supply. $3,189. Units feature a front-loading mechanism suitable for indoor use. Recessed; Surface Mount; View All; Brands. Box 13144, Wauwatosa, WI 53213 Phone: 800-676-5161 We are a leading Wisconsin-based manufacturer & supplier of high-quality USPS Approved & private locking residential & commercial mailboxes. Apartment house delivery requires that mailboxes be located reasonably close to the entrance in vestibules, halls, or lobbies. Aluminum Recessed-Mounted USPS Access Vertical Mailbox with 3 Door. Meet USPS and Fair Housing accessibility requirements. FAQs Request. High Security CBU. USPS-Approved. S. The 13 door cluster mailbox is USPS approved - a perfect outdoor pedestal mailbox for apartments and commercial buildings. Buy Surface Mounted Vertical Mailoxes factory direct from mailboxes. MAIL DELIVERY - THIS PRODUCT IS NON-RETURNABLE Choose from Recess mount or Surface mount (Pictured unit is Surface mount - Click Here to see a picture of the Recess mounted unit). Tags can include a person’s name and date the key is given. Vertical mailboxes are top load (tilt out), constructed of heavy-duty aluminum, and available in an anodized aluminum finish or 5 powder-coated colors. 13 Door USPS Approved Cluster Mailbox. $1,269. Local: 262-782-6510 Toll Free: 800-571-0147. 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 mailbox cluster). US Mail Supply has a vast selection of USPS-approved mailboxes for new construction and also for replacement. The Postal Service has stated in their April 5, 2012 USPS mailbox regulation updates with regard to mailboxes for universities, that forwarding mail for former students and for current students during the summer and vacation periods is the responsibility of the institution or building owner. Durable aluminum construction with your choice of black, green, silver, or white powder-coated finish to complement virtually any exterior color scheme. Commercial mailboxes are those that are contained in one or more sturdy cabinets and mounted in the same location, such as. SKU: 4C11D-05. Installation is easy and painless. Mail and small packages can be placed inside using a hopper door for USPS collection. Ideal for commercial buildings, multi-family housing units, apartment complexes, government and military bases, schools, colleges and other. S. US Mailboxes is committed to. USPS Mailbox Regulations for Multifamily Housing. Replace your small mailbox 1 with a new package-friendly mailbox big enough for all your mail, too. Front Loading Commercial Mailbox - 2 Parcel Lockers. Versatile Front Loading Mailbox with 29 Tenant Compartments. 00. USPS-Approved South Carolina Mailboxes for Homes. This requirement has been in place since 2019,. Constructed and Manufactured of Heavy Duty Extruded. We give additional discounts on USPS. The industry leader in the manufacturing and distributing of quality commercial and residential mailboxes, Salsbury Industries is officially licensed by the USPS to manufacture Cluster Box Units (CBU’s) and. $1,274. Properties such as apartment complexes, communities, and large commercial properties will need to make use of a larger, centralized mail system for best results. Constructed from heavy-duty galvanized steel.