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(More customer reviews)The installation mount for 4X4 posts should be reinforced a bit. The base part that attaches to the mailbox is really easy to work with and sturdy, but the anchors that mount it to the 4X4 post are too short (they extend only about two inches down the post) and use only 1 inch screws. In our rural area that would make knocking the mailbox off of the post quite easy, especially because it is quite heavy.
I was able to reinforce the mount with 12 inch and 16 inch galvanized steel straps (one on each side of the post--alternating lengths--available for a small cost at the local hardware store). I drilled through the anchor plating to match the strapping and used a 2 inch X 1/4 inch diameter lag screw with washer at slightly different heights and horozontal positions to drive through the overlapping anchor plate and the top of the strap to really secure the whole mounting plate (all holes pre-drilled). The Mailbox is added after the plate is secured so that modification can be done in your shop. Then I anchored the strapping lower down the post at different levels on each side with the same lag screws/washers. Just to be sure I added two inch galvanized deck screws to the part of the base plate that was not covered by the extra strap and at several places along the strap as well. I considered drilling a hole in the bottom of the mailbox centered over the post and drilling a hole down the center of the post for a much longer lag screw (9-12 inches) or a similar diameter spike (I have a 16 inch long 3/8 inch drill bit). I decided against that for now because our community may be changing the location of the mailboxes and providing a mounting platform which would make the mounting plate unnecessary. If the strapping proves to be insufficient to prevent vandalism, I may add that at a later date.
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Architectural Mailboxes 4 X 4 Wood Post AdapterThe 4" x 4" Post Adapter can be used to attach any Architectural Mailboxes post mount mailbox to a 4x4 wood post. The adapter plate is constructed of heavy gauge galvanized steel and finished with a durable powder coat.
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