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ARCHITECTURAL MAILBOXES Sequoia Post Mount Mailbox Review: Built for durability

ARCHITECTURAL MAILBOXES 5560P-R-10 Sequoia Heavy Duty Post Mount Mailbox, Pewter, L
4.6
[Heavy-Gauge Galvanized Steel]  Ultra-strong construction with powder-coat finish protects against rust and corrosion.
[Reinforced Rigid Body]  Extra rigidity plus galvanized steel flag and magnetic latch for durable, reliable performance.
[Generous Mailbox Dimensions]  8 in W x 9.7 in H x 20.8 in D; sturdy 14 lb construction.
[Pre-Drilled Mounting Holes]  Predrilled 4 in x 10 in floor holes for quick, hassle-free installation.
[Number-Friendly Panels]  Door and side panels provide easy placement for house numbers.
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Home improvement hardware that promises long-lasting outdoor performance with a corrosion-resistant build and reinforced structure. Homeowners who want a low-maintenance, secure letterbox will appreciate the robust construction and easy mounting. Is the ARCHITECTURAL MAILBOXES Sequoia Post Mount Mailbox the right durable upgrade for your front garden?

⚡ At a Glance
  • Build Quality: Heavy-gauge galvanised steel construction with full powder coating for corrosion resistance
  • Best for: Homeowners seeking a long-lasting, low-maintenance post-mount mailbox
  • Not ideal for: People who need integrated parcel storage or electronic locking solutions

Galvanised steel and a powder-coated finish protect against rust. Reinforced body offers extra rigidity and a magnetic latch keeps the door closed.


Corrosion resistance – with heavy-gauge galvanised steel and full powder coating

Galvanised steel forms a protective zinc layer that slows oxidation, while the powder coat adds a durable outer barrier against moisture and salt. Together these treatments reduce surface corrosion and paint failure.

Low maintenance and longer life in exposed positions, reducing the need for early replacement or frequent repainting.

Secure, rigid construction – with a reinforced body and magnetic latch

A reinforced body increases structural rigidity so the box resists deformation, and a magnetic latch holds the door firmly closed without mechanical bits that wear quickly.

Letters stay protected and the door remains firmly closed during rain or wind, giving reliable everyday security.

Simpler fitting on-site – with predrilled floor mounting holes

The floor includes predrilled 4 in x 10 in mounting holes designed to accept fixings for a secure mount to a supporting surface. Predrilled holes speed up alignment and reduce on-site drilling.

Installation is quicker and neater, whether fitting to a post or a prepared mounting platform.

✨ The 4 Key Reasons for ARCHITECTURAL MAILBOXES Sequoia Post Mount Mailbox
  1. Generous internal size – Holds standard mail and small parcels with depth and width to spare
  2. Galvanised steel flag – Durable flag resists rust and stays functional season after season
  3. Dedicated number panels – Door and side panels allow neat house-number application for clear identification
  4. Solid 14 lb weight – Adds stability once mounted, reducing movement and rattling
📋 Technical Details at a Glance
  • Category: Post mount mailbox
  • Brand: ARCHITECTURAL MAILBOXES
  • Model: 5560P-R-10 Sequoia
  • Material: Heavy-gauge galvanised steel
  • Finish: Fully powder coated for corrosion resistance
❓ Frequently Asked Questions

Q: Is the mailbox resistant to rust and weathering?

A: Yes. The construction uses heavy-gauge galvanised steel combined with a full powder-coat finish specifically described for corrosion resistance.

Q: How is the mailbox fitted or mounted?

A: Predrilled 4 in x 10 in mounting holes in the floor allow straightforward installation and fixing to a mounting surface.

Q: Where can house numbers be applied?

A: Door and side panels provide dedicated places for house numbers to be applied for clear identification.

🏆 Our Verdict

Homeowners who want a durable, low-maintenance post-mount mailbox will find the Sequoia well suited to everyday use. Heavy-gauge galvanised steel, a full powder-coat finish and a reinforced body deliver long-lasting corrosion resistance and structural rigidity. Sturdy construction combined with simple mounting suggests good long-term value and minimal upkeep.