Triple Mailbox

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Increase Efficiency with a Triple Mailbox

Housing three households or units without overwhelming your curb space. A triple mailbox is the answer for triplexes, small rental units or multi-office buildings. By grouping three boxes together, you get more organization, less clutter and a cohesive exterior look.

3 Unit Mailbox Benefits

  • Shared Maintenance
    Split the cost among three parties and reduce individual costs for upkeep and repairs.

  • Less Clutter
    One 3 mailbox post keeps your exterior neater and more uniform than three separate stands.

  • Faster Mail Delivery
    Carriers can finish their routes quicker, making it more convenient for residents and faster service.

USPS Regulations

  • Height: Make sure your post sets mailboxes 41–45 inches above the curb or road.

  • Accessibility: Ensure the triple unit is easy for the carrier to reach from their vehicle.

  • Labeling: Each box needs clearly visible identification—house numbers or letters—for correct sorting.

Installation Tips

  • Check Community Rules: Confirm any restrictions on mailbox color, size or material.

  • Secure Fasteners: Use heavy duty brackets and screws to hold all three boxes in place.

  • Level and Aligned: Keep the boxes even for a professional look and easy mail retrieval.

Brand Showcase for Triple Mailboxes

  • Mailboss: Known for secure locking compartments and tough steel bodies. Great for high theft areas.

  • Whitehall Products: Famous for decorative flair—aluminum castings and personalized nameplates.

  • Salsbury Industries: Offers a wide range of post mounted systems that meet USPS specs.

Shop Now for Triple Convenience

Get organized with a three mailbox post from our selection. Shop now and get free shipping and see how a 3 unit mailbox can simplify delivery, reduce clutter and boost your curb appeal.
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