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Horizontal Commercial Mailboxes

USPS Approved Horizontal Mailbox Information - Commercial Mailboxes

aluminum cluster box unit

National Mailboxes provides USPS approved horizontal mailboxes from the H1400 (front load) and H1500 (rear load) Commercial Mailbox Unit Series. Constructed of heavy-duty aluminum, horizontal mailboxes can also be used for private party access and distribution

horizontal mailbox door units

Our commercial mailbox unit series is manufactured entirely from heavy gauge thick aluminum with specialized anodized aluminum / silver finish for corrosion-rust proof resistance. The H1400 (Front Load) and H1500 (Rear Load) Horizontal Mailbox Series is designed for a number of different applications.

Apartments, condominiums, commercial and office buildings, colleges and schools
standard "A" size (5"H x 6.37"W) doors which are available 3, 4 or 5 doors wide and 5, 6, or 7 doors high. Each door comes standard with 5-pin cylinder cam lock with 2 keys, & clear plastic name/number window slot for tenant identification.

Also available upon request our larger "B" size (5"H x 12.87"W) doors which come 2 doors wide and 5, 6, or 7 doors high. Each door comes standard with 5-pin cylinder cam lock with 2 keys, & clear plastic name/number window slot for tenant identification.

Each compartment measures 15" deep. Other (custom) larger door sizes and configurations are available upon request.

These mailboxes are wall mount recessed style units. Recommended minimum wall opening depth is 17".

Standard finish is anodized aluminum / silver finish. Other finishes available for an additional 15% charge include gold, dark bronze, black, sandstone, silver speck and postal grey.

Contact National Mailboxes Customer Service Center for more information at 1-800-676-5161.

  • USPS Approved H1400 & H1500 Series
  • Available for US Postal Service Use
  • Can also be used for Private Party Access / Distribution

Manufactured entirely from heavy gauge thick Aluminum with specialized anodized aluminum finish for corrosion-rust proof resistance, our USPS Approved H1400 Series (Front Load) and H1500 Series (Rear Load) are designed for a number of different applications. Such as apartments, condominiums, commercial/office buildings, colleges, schools, etc. These units are available for U.S. Postal Service use or for private party access. Units come with standard "A" size (5"H x 6.37"W) doors which are available 3, 4 or 5 doors wide and 5, 6, or 7 doors high. Also available upon request our larger "B" size (5"H x 12.87"W) doors which come 2 doors wide and 5, 6, or 7 doors high. Each door comes standard with 5-pin cylinder cam lock with 2 keys, & clear plastic name/number slot for tenant identification. Each compartment measures 15" deep. Other (custom) larger door sizes and configurations are available upon request. Standard finish is anodized aluminum / silver finish. Other finishes available for an additional 15% charge include gold, dark bronze, black, sandstone, silver speck and postal grey.

Front Loading (FL) Horizontals
If ordering Front Loading Horizontals, please note that one door will be used as either a postal door (for U.S. Postal approved units) or as a master door (for private access units), and cannot be used as a tenant door. However, this door can be used as an outgoing mail slot or as an office drop box, upon request.

Rear Loading (RL) Horizontal Mailboxes
If ordering Rear Loading Horizontals, all doors are available for tenant use. Optional removable rear cover is available -- contact Customer Service for more information.

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