--- product_id: 19300081 title: "Architectural Mailboxes Galvanized Steel 4 x 4 Adapter Plate, 7540B-10, Black" brand: "architectural mailboxes" price: "AR$17153" currency: ARS in_stock: false reviews_count: 13 url: https://www.desertcart.com.ar/products/19300081-architectural-mailboxes-galvanized-steel-4-x-4-adapter-plate-7540b store_origin: AR region: Argentina --- # Supports 50 lbs Multiple bolt patterns Durable steel build Architectural Mailboxes Galvanized Steel 4 x 4 Adapter Plate, 7540B-10, Black **Brand:** architectural mailboxes **Price:** AR$17153 **Availability:** ❌ Out of Stock ## Summary > 🔧 Elevate Your Mailbox Game! ## Quick Answers - **What is this?** Architectural Mailboxes Galvanized Steel 4 x 4 Adapter Plate, 7540B-10, Black by architectural mailboxes - **How much does it cost?** AR$17153 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/19300081-architectural-mailboxes-galvanized-steel-4-x-4-adapter-plate-7540b) ## Best For - architectural mailboxes enthusiasts ## Why This Product - Trusted architectural mailboxes brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sleek Aesthetic:** Finished in a stylish black powder coat that complements any outdoor decor. - • **Easy Installation:** Includes all necessary hardware and spacers for a hassle-free setup. - • **Heavy-Duty Support:** Designed to securely hold mailboxes weighing up to 50 lbs. - • **Robust Construction:** Crafted from galvanized steel for long-lasting durability and strength. - • **Versatile Mounting Options:** Easily adapts to your unique setup with top, side, and front mounting. ## Overview The Architectural Mailboxes 7540B-10 4x4 Adapter Plate is a versatile and durable accessory designed to securely attach your mailbox to a wooden 4x4 post. With multiple mounting options and a robust galvanized steel construction, this adapter plate ensures your mailbox remains stylish and functional, supporting up to 50 lbs. ## Description The 4 in. x 4 in. Post Adapter can be used to attach any Architectural Mailboxes post mount mailbox to a 4 in. x 4 in. wood post. The adapter plate is constructed of heavy gauge galvanized steel and finished with a durable powder coat. The adapter includes mailbox mounting hardware and spacers used for T2 sized mailbox installation. Review: Just what I needed, works great - Easy to install with lots of pre-drilled holes to provide mounting options, I used bolts this time and I expect I will not have to re-mount my mailbox again, ever. Nice and sturdy, located right where it should be. Review: Very easy to install - We didn’t have a mailbox for our cabin in the mountains and after finally getting permission to put one up my husband chose this mounting bracket. This mounting bracket is very strong but also very easy to put up. We needed something that was easy to install but also is very strong. This bracket does not disappoint ## Features - Can be used to attach Architectural Mailboxes post mount Mailbox to a wooden 4x4 post - Multiple bolt hole patterns, including 4x10 bolt hole pattern and 11-1/4″ side flange mount screw pattern - Can be installed onto a wooden post as a top mount, side rail mount and front cantilever mount to suit your needs - Durable galvanized steel construction - Includes mailbox mounting hardware and spacers used for T2 sized mailbox installation.Finished with durable black powder coat.Supports up to a 50 lbs. mailbox ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0130EAWLO | | Access Location | Front | | Best Sellers Rank | #481,085 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #333 in Post-Mount Mailboxes | | Brand | ARCHITECTURAL MAILBOXES | | Brand Name | ARCHITECTURAL MAILBOXES | | Capacity | 50 pounds | | Color | Black | | Customer Reviews | 4.6 out of 5 stars 2,281 Reviews | | Global Trade Identification Number | 00832794006186 | | Included Components | 4x4 Adapter Plate | | Included Security Features | Hopper & Baffle | | Item Dimensions D x W x H | 4.6"D x 6"W x 1.9"H | | Item Type Name | Accessory | | Item Weight | 1.5 pounds | | Manufacturer | Architectural Mailboxes | | Manufacturer Part Number | 7540B-10 | | Material | Metal | | Material Type | Metal | | Model Number | 7540B-10 | | Mounting Type | Post Mount | | Number of Items | 1 | | Product Dimensions | 4.6"D x 6"W x 1.9"H | | Security Features | Hopper & Baffle | | Style Name | Contemporary | | UPC | 832794006186 | | Unit Count | 1 Count | ## Images ![Architectural Mailboxes Galvanized Steel 4 x 4 Adapter Plate, 7540B-10, Black - Image 1](https://m.media-amazon.com/images/I/71ZnBfJEAhL.jpg) ![Architectural Mailboxes Galvanized Steel 4 x 4 Adapter Plate, 7540B-10, Black - Image 2](https://m.media-amazon.com/images/I/81CpT6ONtRL.jpg) ![Architectural Mailboxes Galvanized Steel 4 x 4 Adapter Plate, 7540B-10, Black - Image 3](https://m.media-amazon.com/images/I/71pz2QeHj2L.jpg) ![Architectural Mailboxes Galvanized Steel 4 x 4 Adapter Plate, 7540B-10, Black - Image 4](https://m.media-amazon.com/images/I/71UI+TcmeFL.jpg) ![Architectural Mailboxes Galvanized Steel 4 x 4 Adapter Plate, 7540B-10, Black - Image 5](https://m.media-amazon.com/images/I/81nXYWYTx4L.jpg) ## Questions & Answers **Q: Will this plate work with the Oasis Jr. Support arm?** A: yes **Q: Will this fit 6400p-r-10 mailbox? 11.3 x 18.2? (It's recommended by Architectural Mailboxes, but doesn't look like it will fit.** A: Hello, yes the 7540B-10 Mailbox Adapter Plate is compatible with the 6400P-R-10 Oasis Eclipse mailbox to mount to a 4x4 wood post. The 7540B-10 Adapter plate is designed to fit all Architectural Mailboxes post mount mailboxes. Thanks for reaching out! **Q: The post and hole in the adapter plate are 3.5 x 3.5. I cannot get it onto the post. Advice?** A: Hello, we are sorry to hear that the adapter plate will not easily slide onto your post. We suggest sanding down the top edge of the post so that the adapter plate is able to fit onto the top of the post. Thanks for reaching out! **Q: Would this fit the Gibraltar extra large rural mailbox ??** A: No! ## Customer Reviews ### ⭐⭐⭐⭐⭐ Just what I needed, works great *by P***E on December 18, 2021* Easy to install with lots of pre-drilled holes to provide mounting options, I used bolts this time and I expect I will not have to re-mount my mailbox again, ever. Nice and sturdy, located right where it should be. ### ⭐⭐⭐⭐⭐ Very easy to install *by M***K on October 15, 2023* We didn’t have a mailbox for our cabin in the mountains and after finally getting permission to put one up my husband chose this mounting bracket. This mounting bracket is very strong but also very easy to put up. We needed something that was easy to install but also is very strong. This bracket does not disappoint ### ⭐⭐⭐⭐⭐ Makes Install Easy *by S***E on March 16, 2024* I had a large locking box to install so set on a 4 x 4 and added diagonal braces cut from a 4 x 4. Box is a rock! --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.ar/products/19300081-architectural-mailboxes-galvanized-steel-4-x-4-adapter-plate-7540b](https://www.desertcart.com.ar/products/19300081-architectural-mailboxes-galvanized-steel-4-x-4-adapter-plate-7540b) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-09-12*