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
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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
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Height: Make sure your post sets mailboxes 41–45 inches above the curb or road.
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Accessibility: Ensure the triple unit is easy for the carrier to reach from their vehicle.
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Labeling: Each box needs clearly visible identification—house numbers or letters—for correct sorting.
Installation Tips
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Check Community Rules: Confirm any restrictions on mailbox color, size or material.
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Secure Fasteners: Use heavy duty brackets and screws to hold all three boxes in place.
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Level and Aligned: Keep the boxes even for a professional look and easy mail retrieval.
Brand Showcase for Triple Mailboxes
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Mailboss: Known for secure locking compartments and tough steel bodies. Great for high theft areas.
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Whitehall Products: Famous for decorative flair—aluminum castings and personalized nameplates.
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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.