4C Series High Security Horizontal Mailboxes - Commercial Mailboxes

Manufactured to New Postal Regulations

National Mailboxes has locking secure mailboxes made entirely of heavy gauge aluminum (U.S.P.S. approved).

Our horizontal, high security wall-mount mailboxes are manufactured to meet the specifications of U.S.P.S. standard 4C which was created to provide a higher level of mail security.

Horizontal mailboxes feature a durable aluminum powder coated finish and include factory installed 1/2" wide peripheral trim.

Standard powder coated color finishes are: Silver Speck and Postal Grey. Other colors available at no extra charge are blonde gold, gold speck, black, dark bronze, white, forest green, sandstone, antique bronze, and antique copper.

Locking Secure Mailboxes
Our locking secure mailboxes are available as standard units or can be configured with a combination of four mailbox door sizes and three parcel locker door sizes to meet your custom requirements. Each secure mailbox door includes a five pin cylinder cam lock with a dust/rain shield and three keys. A compartment equivalent to two 3-1/4" high tenant doors is used for outgoing mail collection. The compartment is labeled "Outgoing Mail" and includes a 10-3/4" W x 3/4" H mail slot and a weather protection hood.

Indoor & Outdoor Horizontal Mailboxes
High security horizontal mailboxes are designed for indoor and outdoor use and are ideal for apartments, commercial buildings, colleges and schools and many other applications. Order your secure mailbox today. Note: Series 4C Horizontal Mailboxes meet the specifications of USPS-STD-4C and are required for new construction and major renovation effective October 5, 2006.

Contact our Customer Service Center for more product information at 1-800-676-5161.

If Front Loading: Units include one or two master door(s) that swings on continuous integral hinges. The outgoing mail compartment includes the U.S.P.S. master lock access door and cannot be used for mail distribution. The rear of the unit incorporates a solid closed back.

If Rear Loading:The front of the outgoing mail compartment is comprised of two fixed panels and there is no U.S.P.S. master lock access door. The rear of the unit incorporates one or two heavy duty access door(s) with latches and continuous hinges.

4C Series High Security Horizontals Front Loading (USPS Approved) Units are Recessed/ Wall Mount Style

National Mailboxes High Security Horizontal Mailboxes

• Required for New Construction and Major Renovation Effective October 2006
• Meets USPS-STD-4C Specifications
• Fully Integrated or Stand-Alone Parcel Lockers
• Single and Double Column Units
• Indoor and Outdoor Use
• Outgoing Mail Receptacles
• Front and Rear Loading Units
• Standard tenant door size: 3.25"H x 12"W
• USPS STD-4C Compliant mailbox systems are mandatory on all New Construction and Major Renovations as of October 5, 2006.

  Standard Features for 4C High Security Horizontal Mailboxes:

• Standard Colors: Silver Speck and Postal Grey. Other colors available at no extra charge include: blonde gold, bright gold, black, dark bronze, white, forest green, and sandstone.
• USPS Approved and Postal Certified (Manufactured to the new postal regulation.)
• All 4C Units are recessed and in-wall mount style.
• Durable, corrosion resistant weatherproof powder coat finish resists scratching and vandalism.
• Manufactured & constructed of heavy gauge aluminum and 300 series stainless steel components for superior strength, corrosion resistance and superior outdoor durability.
• Master postal loading doors are designed with interlocking overlap seams to prevent prying, and breaking in.
• Quick release master postal loading door lock latch for easy access by Postal carriers.
• Solid aluminum mail slot frame similar to High Security CBU design which protects adjacent customer compartments and collection compartment.
• Special double-locking parcel locking mechanism for additional mail package security.
• New USPS-1172 910A 5-pin cylinder cam lock with 3 keys per door.
• Front and rear loading units are available.
• Number decals up to three digits or engraved identification up to six characters are available at no extra charge.
• National Mailboxes multi-unit connector kit hardware included with every 4C mailbox unit for convenience and easy installation.