What material is used in this post?

It is made from 6063-T6 aluminum, known for its strength and corrosion resistance.

Is the black finish weatherproof?

Yes, the finish is designed to resist fading, peeling and weather damage.

Can it be used in coastal areas?

Yes, aluminum is resistant to salt and moisture, making it suitable for coastal environments.

Is it suitable for DIY installation?

Yes, it can be installed by DIY users, though professional installation is recommended for larger projects.

Will this part fit my existing fence or gate?

It is made for Aluglobus systems. Send our team a photo and measurements and we will confirm the right part before you order.

What screws should I use with aluminum?

Use stainless steel fasteners with aluminum to avoid galvanic corrosion.

Black 3.15 x 3.15 in. light-duty aluminum square post, 11 ft, .080 in. wall

MaterialAluminum 6063-T6

FinishAAMA 2604 powder coat, Black

Size3.15 in. x 3.15 in. square post

InstallationWall installation or concrete footing

Aluminum systems

3.15x3.15 in. Light Duty Square post 11 ft. (.080 Thickness) - Black

Black aluminum posts: an 11 ft light-duty 3.15″ x 3.15″ aluminum square post with a .080″ wall and black AAMA 2604 powder coat. It is 3 ft longer than the 8 ft LD post and is listed for wall installation or a concrete footing on fences and wall toppers.

Aluminum 6063-T6
AAMA 2604 powder coat, Black
3.15 in. x 3.15 in. square post

$128.80

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Factory direct from Aluglobus Aluminum Systems
Nationwide shipping across the U.S.
Project support for homeowners and trade pros

MaterialAluminum 6063-T6

FinishAAMA 2604 powder coat, Black

Size3.15 in. x 3.15 in. square post

InstallationWall installation or concrete footing

4.9 ★100+ Google reviews

1,000+Active contractors nationwide

6063-T6Aluminum

Factory directSold as listed

Get the Highlights

Posts, slats and accessories that work as one system.

Black, white, bronze or woodgrain.

AAMA 2604 powder coat over a 7-stage pretreatment.

Built for long, straight runs.

Factory direct, shipped nationwide.

3.15″ LD square post, 11 ftBlackAluminumSold as listedShips nationwideExpert supportFactory direct3.15″ LD square post, 11 ftBlackAluminumSold as listedShips nationwideExpert supportFactory direct

Product specs

3.15 in. Light Duty Post, 11 ft. Specifications

Longer LD option: an 11 ft 3.15″ x 3.15″ aluminum post with a .080″ wall, listed for wall installation or a concrete footing. The finish is AAMA 2604 black powder coat, and it takes the 3.15″ flat press cap.

Post size3.15″ x 3.15″

Length11 ft.

Wall thickness.080″

MaterialAluminum

FinishBlack

ApplicationLight-duty outdoor projects

Install methodSet in concrete

Matching cap3.15″ aluminum post cap

aluminum fence post

Aluminum fence post: 3.15″ LD square post, 11 ft

Black aluminum posts in an 11 ft length give you room for taller runs and deeper footings. This light-duty 3.15″ post is listed for fences and wall toppers, mounted on a wall or set in concrete, and as an optional pedestrian gate post. It is 3 ft longer than the 8 ft LD post; both share the .080″ wall and the 3.15″ cap.

Where it's used

What you get, and where it goes.

Included: 1 post, 3.15″ x 3.15″ x 11 ft, .080″ wall
Fences and wall toppers
Wall installation or a concrete footing
Optional pedestrian gate post
Runs that need more than 8 ft of post

How the square post system works

Square posts with C-channels hold the slats, finished with caps, spacers and base plates.

2″, 3″, 3.15″ and 4″ square posts
C-channel kits
Channel and C-channel spacers
Flat press caps
Base plates

Watch the videos

See the square post system

How square posts and channels hold the slats.

How it works

How to install it.

Mark locationsMeasure and mark the location of each post.
Dig holesDig post holes according to the project requirements and local installation guidelines.
Set and levelPlace the post in the hole and confirm it is level and properly aligned.
Pour concreteSecure the post with concrete and allow it to cure completely.
Attach componentsAttach the compatible fence panels, slats, brackets or enclosure components.
Check and capCheck the fence line for alignment and finish with a 3.15″ aluminum post cap.

FAQ

Questions, answered.

Why choose the 11 ft over the 8 ft?

For extra length: 11 ft versus 8 ft, with the same .080″ wall and 3.15″ profile. If 8 ft is enough, the 3.15x3.15 light duty square post 8 ft costs less.

Can it be mounted on a wall?

Yes. It is listed for wall installation or a concrete footing.

Can I use it as a gate post?

It is listed as an optional pedestrian gate post. For driveway gates, use an HD post and confirm with our team.

Which cap fits?

The 3.15″ flat press cap.

How thick is the wall?

.080″. HD square posts have heavier walls: .090″ on the 3×3 and .125″ on the 4×4.

Still not sure? Call (888) 876-3006 or send us your project.

Full product description: 3.15×3.15 in. Light Duty Square post 11 ft. (.080 Thickness) – Black

3.15″ light-duty post, 11 ft

The 11 ft 3.15″ x 3.15″ post is the long member of our light-duty square post range. It keeps the .080″ wall of the 8 ft post and adds 3 ft of length. The listing covers wall installation or a concrete footing, use on fences and wall toppers, and an optional pedestrian gate post.

Pick 11 ft when

Your fence or wall topper needs more than 8 ft of post.
You are mounting posts on a wall and want length to trim.
The post doubles as a light pedestrian gate post.

For standard fence sections, the 3.15x3.15 light duty square post 8 ft costs less.

Specifications

Size	3.15 in. x 3.15 in. square post
Length	11 ft
Wall thickness	.080 in.
Duty	Light duty
Material	Aluminum 6063-T6
Finish	AAMA 2604 powder coat, black
Installation	Wall installation or concrete footing
Use	Fence and wall topper; optional pedestrian gate post

Top it with the 3.15″ flat press cap. For heavier duty, see the 3×3 HD square post.

Real projects

Aluglobus fences, installed.

Real Aluglobus projects built with this system. Every photo is shown in full; tap to enlarge.

Inside the factory

See where your fence is actually made.

Inside the Aluglobus aluminum extrusion line, where the profiles for your fence are made. From there every piece goes through the 7-stage pretreatment line, the powder booths and the 110 ft cure oven. Factory direct, no middlemen.

6063-T6 USExtruded architectural aluminum

7 stagesArchitectural pretreatment before powder

110 ftCure oven, long enough for full-length profiles

NationwideFactory direct shipping to your site

Manufacturing warranty

No Factory Proof.
No Manufacturing Transparency.
No Warranty You Can Verify.

Know who manufactures your aluminum and who stands behind it.

U.S. company
U.S. warranty support

Powder coating warranty

No Coating Brand.
No Preparation Proof.
No Finish Warranty You Can Verify.

Know the coating manufacturer, the preparation process, and who's responsible for the finish.

Inside our U.S. machine shop

Engineered first. Manufactured in-house. Built with precision.

At Aluglobus, we don't just supply aluminum systems. We engineer and manufacture the components that make them work.

Inside our U.S. machine shop we make custom aluminum parts with CNC aluminum machining, precision laser cutting and aluminum sheet metal fabrication: engineered brackets and connection plates, specialized mounting hardware and custom components for our fences, gates and architectural aluminum systems. Making them ourselves gives us more control over quality, fit and customization.

U.S.-manufactured componentsEngineered aluminum brackets, connection plates and aluminum fence hardware, made in our own machine shop.

Precision machining of an aluminum bracket and connection plate in the Aluglobus U.S. machine shop — **Precision machining**Custom aluminum components machined for accurate system connections.

Precision laser cutting of aluminum sheet into mounting plates and brackets in the Aluglobus machine shop — **Laser-cut aluminum parts**Precision-cut brackets, mounting plates and fabricated components.

U.S.-based manufacturing facility

Our American machine shop manufactures aluminum components and custom parts for Aluglobus systems.

Engineered before manufacturing

Components start with technical design and engineering before they move into precision production.

Precision CNC machining

Custom aluminum parts are CNC-machined for consistent dimensions, accurate connections and dependable fit.

In-house laser cutting

Precision-cut aluminum sheets, mounting plates, brackets and specialized components.

Custom aluminum fabrication

Specialized brackets, connectors, mounting solutions and custom-designed parts made to your project requirements.

Quality control through direct manufacturing

More oversight of production for consistent components, accurate tolerances and reliable system compatibility.

Built for contractors and custom projects

Our fabrication supports aluminum fencing, gates, architectural applications and specialized installations.

A manufacturer behind the system

We show the process. So you know who stands behind the product.

Not just a supplier. From engineering drawings to finished aluminum components, we make the parts that make the system work.

Plan your fence

The right part for your fence.

Questions? Talk to a specialist
(888) 876-3006

Easy to install

Bolt-together aluminum with standard tools. No welding, no painting.

Ships nationwide

Factory-direct kits shipped across the U.S.

Real expert support

Homeowner and contractor support from the people who make it.

Trusted by thousands

4.9 stars on Google and 1,000+ active contractors nationwide.

Architectural quality

USA 6063-T6 aluminum and an AAMA 2604 powder-coat finish.

Built for any weather

No rust, no rot, non-combustible, with smoke developed 0.

Reviews

Real customers. Real reviews.

Homeowners and contractors on their Aluglobus fences and gates.

All reviews

DAYMOND JOHNCEO, Entrepreneur and Investor

MIKEHomeowner

DAVIDCustomer

4.9★★★★★Google rating, 100+ reviews

Installed Aluglobus fences

Read all reviews

Moshe Perez

See the system

Locations

Showrooms, wholesale and partners near you.

See our systems in person at an Aluglobus showroom, pick up from a wholesale location, or work with an authorized partner. Nationwide U.S. shipping from the factory everywhere else.

ShowroomSouthern California16721 Roscoe Blvd, North Hills, CAGet directions ↗ShowroomNorthern California4909 Auburn Blvd #1, Sacramento, CA 95841Get directions ↗

WholesaleBay AreaSan Jose, CA · address upon request

WholesaleSacramento12355 Quicksilver Dr, Rancho Cordova, CA 95742Get directions ↗WholesaleFlorida5060 N.E. 12th Ave, Oakland Park, FL 33334Get directions ↗WholesaleHawaiʻi91-226 Kauhi St #2D, Kapolei, HI 96707 · OʻahuGet directions ↗

WholesaleIndio45080 Golf Center Parkway, Suite G, Indio, CA 92201

Authorized partnerCalabasas24000 Ventura Blvd, Calabasas, CAGet directions ↗Authorized partnerSan Diego9072 Clairemont Mesa Blvd, San Diego, CA 92123Get directions ↗

Authorized partnerColoradoContact us for partner details

Project supportLos AngelesOrange CountySan DiegoBay AreaSacramentoLancasterRancho CucamongaIndioNationwide shipping

Call (888) 876-3006 All contact options

Mon to Fri, 9:00 AM to 5:00 PM

Need help finding the right part?

Send your project details or a photo of the part you're replacing, and a specialist will match it for you.

Get a free quote Contractor pricing

Watch

See it built and installed

Installation, product and factory videos from Aluglobus Aluminum Systems.

Specifications

Technical details

Check sizes, material and configuration against your project before ordering.

Size: 3.15 in. x 3.15 in. square post
Length: 11 ft
Wall thickness: .080 in.
Duty: Light duty
Material: Aluminum 6063-T6
Finish: AAMA 2604 powder coat, Black
Installation: Wall installation or concrete footing
Use: Fence and wall topper; optional pedestrian gate post

Product views & drawings167 images

FAQ

Questions, answered

Still deciding?

Send your measurements and photos. Our team will help you choose the right system and parts.

Request a quote

What finish does it have?

AAMA 2604 powder coat in black.

What alloy is it?

Aluminum 6063-T6.

Does it require maintenance?

Minimal maintenance is needed, just occasional cleaning.

Is this a good aluminum fence post?

Yes. It is part of the Aluglobus aluminum fence and gate system, so it matches our caps, slats and rails. Check the size and length above against your layout.

What else do people call this?

Shoppers also search for it as aluminum fence posts, aluminum square post or metal fence post.

Ready when you are

Ready to start your project?

Order online or send your project details for a factory-direct quote.

Choose options Request a quote

Trusted by investors, architects, homeowners and contractors

Watch Plug ✔

@watchplug

"I couldn't be happier with the fence. From the moment it went up, it completely transformed my backyard. The sleek design without visible posts gives it such a modern, high-end look. It's like having a piece of art around my home. I also love that it's fire-resistant, which gives me peace of mind living in this area. Definitely worth every penny!"

Mike

Home Owner

Daymond John

CEO, Entrepreneur & Investor

DW Design & Build ✔

@dannywangdesign

"We're honored to be recommended by Danny Wang Design, a premier contractor known for exceptional outdoor living spaces. In our latest collaboration, Danny created a stunning backyard and entrusted us with the gate and fence system. We're proud to be his trusted partner for quality and reliability."

"AluGlobus was extremely helpful with my order, answering all my questions and delivering everything to Texas in perfect condition. The products were well-packed in a solid wood crate, and excellent quality. I'm so glad I found them online. Highly recommended. I'll be buying from them again. Thanks to everyone who made it happen!"

David

Customer

Service Department

Mercedes Benz Engineer

"We use Aluglobus 100% with every fence/gate job we have. As a contractor I can say they are working very hard and their product is the highest quality I can find and the best price. We're very happy working with them! Our experience working with them is always top notch."

22 July 2025

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3.15x3.15 in. Light Duty Square post 11 ft. (.080 Thickness) - Black

Get the Highlights

3.15 in. Light Duty Post, 11 ft. Specifications

Aluminum fence post: 3.15″ LD square post, 11 ft

What you get, and where it goes.

How the square post system works

See the square post system

How to install it.

Questions, answered.

3.15″ light-duty post, 11 ft

Pick 11 ft when

Specifications

Aluglobus fences, installed.

See where your fence is actually made.

No Factory Proof.No Manufacturing Transparency.No Warranty You Can Verify.

No Coating Brand.No Preparation Proof.No Finish Warranty You Can Verify.

Engineered first. Manufactured in-house. Built with precision.

We show the process. So you know who stands behind the product.

The right part for your fence.

Easy to install

Ships nationwide

Real expert support

Trusted by thousands

Architectural quality

Built for any weather

Real customers. Real reviews.

See the system

Showrooms, wholesale and partners near you.

Need help finding the right part?

See it built and installed

Technical details

Square post and C-channel fence system

Before you order

Questions, answered

Still deciding?

Ready to start your project?

Wholesale buyers get $150 OFF their order for a limited time.

FREE DIGITAL MAGAZINE

No Factory Proof.
No Manufacturing Transparency.
No Warranty You Can Verify.

No Coating Brand.
No Preparation Proof.
No Finish Warranty You Can Verify.