Gaines Manufacturing: Mailboxes, Posts & Address Plaques
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Keystone Series Pentad Deluxe Multi-Mount Mailbox Post - Inner Positioned (Mailboxes not included)
$999.00 $799.00 in June!Additional Discounts for 2+ units!
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Keystone Eagle Quad Deluxe Multi-Mount Mailbox Post (Mailboxes not included)
$774.00 $619.00 in June!Additional Discounts for 2+ units!
Usually ships in 1 to 3 business days!
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Keystone Eagle Quad Multi-Mount Mailbox Post (Mailboxes not included)
$587.00 $469.00 in June!Additional Discounts for 2+ units!
Usually ships in 1 to 3 business days!
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Keystone Series Quad Deluxe Multi-Mount Mailbox Post - Inner Positioned (Mailboxes not included)
$937.00 $749.00 in June!Additional Discounts for 2+ units!
Usually ships in 1 to 3 business days!
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Keystone Eagle Triple Deluxe Multi-Mount Mailbox Post (Mailboxes Not Included)
$749.00 $599.00 in June!Additional Discounts for 2+ units!
Usually ships in 1 to 3 business days!
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Keystone Series Triple Multi-Mount Mailbox Post (Mailboxes not included)
$675.00 $539.99 in June!Additional Discounts for 2+ units!
Usually ships in 1 to 3 business days!
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Keystone Series Double Deluxe Mailbox Post
$537.00 $429.00 in June!Additional Discounts for 2+ units!
Usually ships in 2-3 business days!
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Standard Post Address Plaque w/up to six vinyl characters and mounting bolts (Choose Color)
$112.00 $89.00Additional Discounts for 2+ units!
Usually ships in 1 to 3 business days!
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Deluxe Post Address Plaque
$87.00 $69.00Additional Discounts for 2+ units!
Usually ships in 1 to 3 business days!
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Classic Mailbox Address Plaque - (Choose Color)
$87.00 $69.00Additional Discounts for 2+ units!
Usually ships in 2-3 business days!
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Post Kit for House Mark Address Plaques
$59.00Additional Discounts for 2+ units!
Usually ships in 1 to 3 business days!
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Housemark Small Roundtangle Address Plaques with Numbers
$199.00 in June!Additional Discounts for 2+ units!
Usually ships in 1 to 3 business days!
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Housemark Small Roundtangle Address Plaques with Trim Color
$199.00 in June!Additional Discounts for 2+ units!
Usually ships in 1 to 3 business days!
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Housemark Small Oval Address Plaques with Numbers
$199.00 in June!Additional Discounts for 2+ units!
Usually ships in 1 to 3 business days!
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Janzer Mailbox Address Plaque
$69.00Additional Discounts for 2+ units!
Usually ships in 1 to 3 business days!
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Housemark Small Oval Address Plaques with Trim Color
$199.00 in June!Additional Discounts for 2+ units!
Usually ships in 1 to 3 business days!
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Housemark Large Roundtangle Address Plaques with Numbers
$199.00 in June!Additional Discounts for 2+ units!
Usually ships in 1 to 3 business days!
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Housemark Large Roundtangle Address Plaques with Trim Color
$199.00 in June!Additional Discounts for 2+ units!
Usually ships in 1 to 3 business days!
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Housemark Large Oval Address Plaques with Numbers
$199.00 in June!Additional Discounts for 2+ units!
Usually ships in 1 to 3 business days!
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Housemark Large Oval Address Plaques with Trim Color
$199.00 in June!Additional Discounts for 2+ units!
Usually ships in 1 to 3 business days!
About Gaines Manufacturing
Gaines Manufacturing has spent 30+ years producing cast aluminum mailboxes, posts, and address plaques from U.S. facilities. Founded in 1991, the company built its reputation on construction quality that stamped-steel manufacturers don't match. In 2012, Gaines acquired Janzer Mailboxes, expanding its catalog with a modern minimalist line.Three construction details separate Gaines from standard mailbox brands:
Cast aluminum construction: Aluminum doesn't rust, warp, or degrade when surface coatings scratch. Standard steel mailboxes corrode from the finish inward. Cast aluminum holds structural integrity for decades in coastal, humid, and high-rainfall climates without repainting or replacement.
Solid brass accents: Brass hinges and latch hardware outlast zinc and die-cast alternatives at the highest-contact points on the unit. Standard mailboxes use cheaper hardware that strips and corrodes within a few years.
Magnetic door closures: Eliminates the loose, rattling doors common on stamped-steel mailboxes. Magnetic closures don't rely on friction or spring tension that degrades over time














