Model # 5105W

Internet #100009499

Store SO SKU #1000669719

Architectural Mailboxes 46-1/2 in. Standard In-Ground Post in White

Architectural Mailboxes

46-1/2 in. Standard In-Ground Post in White

$6998 /each

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  • Black
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  • Pearl Gray
  • Sand
  • White
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Frequently Bought Together

Product Overview

The Architectural Mailboxes 46-1/2 in. Standard In-Ground Post features heavy duty construction of 4 in. square cross section of heavy gauge steel tubing with a mounting plate welded to the top and a durable powder coat finish. Designed for in-ground installation in concrete. Includes mounting hardware and instruction.

  • Holds a single mailbox
  • Compatible with the Architectural Mailboxes 5100 series, 6200 series and 6700 series models
  • Constructed from heavy gauge galvanized steel with a commercial grade powder coated finish for durability
  • 4 in. x 10 in. mailbox mounting bolt pattern
  • Designed for in ground installation in concrete
  • Includes mounting hardware and instructions
  • White non-reflective finish

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Width (in.)


Accessory Type
Corrosion Resistant
Assembly Hardware
Post Installation Type
Post Material
Product Weight (lb.)
Weight Capacity (lb.)

Warranty / Certifications

Manufacturer Warranty
One Year Limited Warranty

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Customer Questions & Answers

Will this post slide over an in-ground wood 4x4?

Asked by: DoubleDuck
Do not know. Unwilling to buy a 4x4 wood post and post-hole digger to find out. It does not seem likely, since wood posts are not exactly square or an exact size.
Answered by: RetiredGuy
Date published: 2017-04-21
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Customer Reviews

46-1/2 in. Standard In-Ground Post in White is rated 4.5 out of 5 by 36.
Rated 5 out of 5 by from Rating provided by a verified purchaser... Rating provided by a verified purchaser
Date published: 2017-04-05
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2017-04-03
Rated 2 out of 5 by from Too short The post is well made and looks good, but is too short. According to the USPS website "mailboxes should be installed at a height of 41-45 inches from the road surface to the bottom of the mailbox." With the post being 46.5", at a height of 41" only 5.5" are left for anchoring. At 45" above ground a ridiculous 1.5" is left. I cheated and put my box at 38", giving me a whopping 8.5" in hte ground. The hole is 15" wide and filled with concrete and there is rebar going up into the pole, I also drllled holes in the post to put two 12" pieces of rebar into it horizontally. It still wobbles. Not worth the price. I would not buy again, nor can I recommend it to others.
Date published: 2011-09-07
Rated 5 out of 5 by from A MUST HAVE for your mailbox This post is required if you want your mailbox to be free standing and not enclosed in concrete or stone. I needed a mailbox with a lock (Architectural Mailboxes Oasis Post Mount Mailbox) and found one for $98 at Home Depot. The box did not specify clearly you need to purchase a post. The box showed one picture with the mailbox on a post and another with it encased in stone. I did not see the posts at the store so I ordered it online. Fortunately, it did ship quickly. The post is very heavy and durable. Once it got cemented in from the bottom, the post was solid and the mailbox was very sturdy, barely moves. Overall great product, both mailbox and post.
Date published: 2011-06-11
Rated 5 out of 5 by from Well, it's a post... I purchased this post to go with the mailbox by the same manufacturer. The colors matched exactly, the metal is heavy enough gauge that it is pretty solid and with the paint I do not see a need for maintenance for some time to come. I intend to eventually put a planter or shrubs around it to spiff it up a bit. I haven't measured but am pretty sure a majority of two piece planters will fit around the base when the time comes and that is the route I go. The biggest gripe I would have is that I wish it were a bit taller to allow more of a base to sit in the concrete I put it in. For my local regulations (be sure to check the street proximity and height requirements or your town / neighborhood) a majority of the post needed to be above ground allowing only about 6 inches of post in concrete. Maybe that is enough and maybe I'm just a guy who prefers to overbuild everything? Regardless, now that the 'crete has dried it is solid to the touch and does not wobble at all. Much more sturdy than most wood or plastic posts on the street I'd guess.
Date published: 2016-09-28
Rated 5 out of 5 by from Loved it, made the wooden post it went over look beautiful. Loved it, made the wooden post it went over look beautiful.
Date published: 2017-01-31
Rated 4 out of 5 by from Could be built a little longer This post is built very strong and well powder coated. Only problem is it's length...In meeting the USPS letter box height requirements only allows for 11 - 12 inches of post to be buried. I would have preferred another 4 - 5 inches below ground for extra strength.
Date published: 2016-04-26
Rated 2 out of 5 by from Great Quality - Poor Design Wanted 1st-rate mailbox. Done. Needed 1st-rate matching post. No way. Home Depot is for do-it-yourselfers. Does that include those not caring to buy yet more tools we'll only use once (concrete, mixing container, posthole auger)? The post is FAR too short to be set into ground. It's 4" sq., to replace old post (3.5" sq.). After heavy rain, ground was soft enough to wriggle the old post back and forth, making 4" square hole & pulling out old post. Old post is hollow like this one. After pulling the old post, found it had a "post anchor" over 2' long mounted INSIDE the old post. The anchor-&-post combo worked well, needing a post-sized hole only a few inches underground; anchor could be pounded into ground with a hammer. No anchor available for the new Archtectural post. ONLY way to install new post is concrete. - Before interstate move, shed dozens of almost-never-used tools rather than pay movers to lug them 450 miles. - Always avoid concrete for setting posts. This superstrong post in concrete might withstand being hit by a car. However, it's so short that isn't certain. Also, you could be sued for setting a post in concrete in a public right-of-way ... even if the driver's fault, this post could land you in court. If this product is for true do-it-yourselfers WITHOUT special tools rusting idly around the homestead, it should need only a hammer to install. (I kept a hand-held sledge.). That would mean no heavy tools or concrete AND being more forgiving if hit by a car. Great idea. Outstanding quality. Poor combination of length and lack of post anchor. Otherwise, would have gotten 5 stars easily.
Date published: 2015-10-08
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