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Gibraltar Mailboxes Galvanized Steel, Mailbox Mounting Bracket, MB100000

Free shipping on orders over $29.99

$11.39

$ 4 .99 $4.99

In Stock

About this item

  • Heavy duty construction
  • Adjusts to fit most US approved rural mailboxes
  • Recommended for wooden posts
  • Comes with installation hardware
  • Constructed from galvanized steed
  • Constructed from galvanized steed
  • Fit any size postmaster approved rural mailbox
  • Includes mailbox mounting hardware and instructions


These heavy-duty mailbox mounting brackets are constructed from galvanized steel. These versatile Metal Mounting Brackets incorporate a universal design that permits installation on any Gibraltar 4×4 wood post. Ideal for mounting medium-sized, large and extra-large mailboxes to the post, they are made from heavy-duty galvanized steel to reduce the potential for rusting. Mailbox mounting hardware is also provided.


Jim
2025-08-19 19:29:27
Easy to install, fit my existing post. Looks great.
marc eisenberg
2025-08-14 15:17:43
Steel should have been more sturdy
Charnan Kenst
2025-08-12 13:02:50
Not sure what the problem the other reviewers had with this product but I think it works just fine, especially for the price. While the product description says it's for a wood post, I simply switched out the wood screws provided with a couple of nuts/bolts I had on hand to attach it to my metal post. If you have an extra large mailbox like I do, for additional support, place a thin piece of wood between the mailbox and the post.
Simpleton
2025-07-07 11:38:29
I bought this to attach to the extra large gibralter mailbox... https://www.amazon.com/gp/product/B000CSK3RA/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 Although it does fit all USPS approved mailboxes, as this one is, the material is not strong enough to support this large mailbox without bending, and I certainly would not use just 2 to support this extra large box. I actually bought 2 sets as I knew it would probably need the extra support, but I had to add center screws thru the middle of the box also to screw directly to the wood so the box would not flex when the door is closed. This required additional work as the holes are not recessed enough to have the screw heads flush with the floor of the mailbox. So I had to install a cover for the floor.
Kindle Customer
2025-06-27 11:06:01
sturdied up the oversize mailbox on the 60 year old metal post out front
Jim
2025-06-17 13:46:04
Easy to install, fit my existing post. Looks great.
marc eisenberg
2025-05-19 12:28:35
Steel should have been more sturdy
Charnan Kenst
2025-04-27 20:00:22
Not sure what the problem the other reviewers had with this product but I think it works just fine, especially for the price. While the product description says it's for a wood post, I simply switched out the wood screws provided with a couple of nuts/bolts I had on hand to attach it to my metal post. If you have an extra large mailbox like I do, for additional support, place a thin piece of wood between the mailbox and the post.
Simpleton
2025-04-19 16:57:29
I bought this to attach to the extra large gibralter mailbox... https://www.amazon.com/gp/product/B000CSK3RA/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 Although it does fit all USPS approved mailboxes, as this one is, the material is not strong enough to support this large mailbox without bending, and I certainly would not use just 2 to support this extra large box. I actually bought 2 sets as I knew it would probably need the extra support, but I had to add center screws thru the middle of the box also to screw directly to the wood so the box would not flex when the door is closed. This required additional work as the holes are not recessed enough to have the screw heads flush with the floor of the mailbox. So I had to install a cover for the floor.
Kindle Customer
2025-04-13 11:26:34
sturdied up the oversize mailbox on the 60 year old metal post out front
Bigko
2025-04-11 16:10:36
Holes were fixed not elongated as specified in picture.to adjust width. No way to slide bracket to adjust to mailbox.
Customer
2025-04-10 15:51:11
Nice quality
Brad
2025-02-19 17:31:33
Well arrived fine but would not fit my mailbox without drilling g more holes in itThe holes that are already in it weren't even closeMy mailbox base is about 6 inchesWent to Lowes and found what I need at half the price
Bigko
2025-02-02 12:20:41
Holes were fixed not elongated as specified in picture.to adjust width. No way to slide bracket to adjust to mailbox.
Customer
2025-01-24 17:57:29
Nice quality
Brad
2025-01-18 14:07:15
Well arrived fine but would not fit my mailbox without drilling g more holes in itThe holes that are already in it weren't even closeMy mailbox base is about 6 inchesWent to Lowes and found what I need at half the price