Would this work for a gibraltar jumbo galvanized steel post-mount mailbox, black? or is there another set of brackets that attach to a jumbo mailbox?

We use these brackets to install Gibraltar Extra Large mailboxes. They have an inside to inside width of 11-1/8" but advertise an outside to outside width of 11.7". I am not sure what width the Jumbo is. Our large mounting bracket is the largest we sell. Hope this helps.

The description says "no pre-drilled holes" but the third picture shows brackets with holes. Which is it? And why would it not have mounting holes?

Hello! The brackets do have pre-drilled holes for mounting them to the cross arm of the post. They do not have pre-drill holes where the mailbox attaches to the mounting bracket. If they did, you'd have to line up 2 small holes perfectly to attach the box to the bracket. This way, you just install the bracket in the general area of the mailbox mounting hole and just attach with the self drilling screws that are included. We install dozens of mailboxes every day with these brackets and have determined this to be the easiest and fastest way to attach the mailbox to the brackets.

Will this bracket fit the Gibralter D mailbox to a wooden podt?

I think it will work. We used it with a wooden post that also had a short perpendicular wooden platform and attached it to that.

Will this fit a 6 inch mailbox?

No, these are designed to mount a mailbox with an 11" wide floor. There is a smaller one, but those are designed to fit a mailbox with an 8" floor.

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Rust-Free Mailbox Mounting Bracket, Aluminum, Extra Large (T3) (Fits 23.5” L x 11” W mailboxes) Silver

Rust-Free Mailbox Mounting Bracket, Aluminum, Extra Large (T3) (Fits 23.5” L x 11” W mailboxes) Silver

Product ID: 40691878

Details

Brand
Estes Designs
Color
Silver
Included Security Features
Hopper &
Material
Aluminum
Mounting Type
Post Mount

🔩Stainless steel self-tapping screws resist corrosion

🛠️Pre-drilled holes for effortless install

🛡️Rust-free aluminum for lasting durability

$U1953

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Description

📬 Upgrade your curb appeal with rust-proof reliability!

SECURE FIT - Includes stainless steel self-tapping screws that lock your mailbox firmly in place without worrying about rust or loosening.
BUILT TO LAST - Crafted from rust-free aluminum, this bracket stands strong against rot and weather, keeping your mailbox pristine year-round.
EFFORTLESS SETUP - Pre-bent design with pre-drilled holes means no guesswork—install in minutes and get back to your day.
ALL INCLUSIVE HARDWARE - Comes with everything you need—wood screws for posts and stainless steel fasteners—so you’re ready to mount right out of the box.
UNIVERSAL COMPATIBILITY - Fits large post-mount mailboxes up to 23.5” L x 11” W, making it the go-to choice for oversized mail receptacles.

The Estes Designs Rust-Free Mailbox Mounting Bracket is an extra-large, silver aluminum bracket designed to fit post-mount mailboxes up to 23.5” L x 11” W. Featuring pre-drilled holes for easy installation, it includes stainless steel self-tapping screws and wood screws for secure mounting. Its rust-resistant materials ensure long-lasting durability and a clean, professional look for your mailbox setup.

Specifications

ASIN	B01H5MJY6Q
Access Location	Front
Best Sellers Rank	#967,955 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #590 in Post-Mount Mailboxes
Brand Name	Estes Designs Mailbox and Streetscapes
Color	Silver
Customer Reviews	4.4 4.4 out of 5 stars (166)
Included Components	mounting_hardware
Item Weight	0.14 kg
Manufacturer	Estes Designs Mailbox and Streetscapes
Manufacturer Part Number	2640814
Material Type	Aluminum
Model Number	2640814
Mounting Type	Post Mount
Number of Items	1
Security Features	Hopper & Baffle
Style Name	Rural
Unit Count	1 Count

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$U1953

Duties & taxes included

In stock

Sold byAmazon UruguayDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Uruguay.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

View all Trustpilot reviews