3×3 in. x 12 ft. HD Square Post (.090 Thk) – Custom Color + Cap

$17.82 – $263.90

Aluglobus Heavy-Duty Aluminum Post

3″ × 3″ heavy-duty square aluminum post with a 12 ft length and .090″ wall
thickness. Manufactured from 6063-T6 aluminum for strong exterior support,
with a custom architectural finish and matching flat press cap for a clean,
coordinated installation.

Post Size
3″ × 3″

Length
12 ft

Wall Thickness
.090″

Finish
Custom Color

Material
6063-T6 Aluminum

Classification
Heavy-Duty Square Post

Included
12 ft Post + 3″ Matching Flat Press Cap

Profile
Square Architectural Aluminum

Corrosion Resistance
Rust-Resistant Aluminum Construction

Application
Heavy-Duty Fence, Gate & Support Applications

Heavy-duty profile:
the .090″ wall provides increased rigidity for applications requiring
a stronger post. Confirm post depth, mounting method, loads, and
project-specific structural requirements before installation.

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SKU: 26571-1 Categories: Aluminum Fences - DIY Fence Kit Post, Posts Tags: price2024, shop

Description

Product Description

3″ Square Post · 12 ft · HD .090 · Custom Color

A 12 ft heavy-duty square post and matching flat press cap, both finished for the project.

The 3×3 in. x 12 ft. HD Square Post (.090 Thk) – Custom Color + Cap is specified as a 3-inch square aluminum support profile with a .090-inch heavy-duty wall and 12-foot supplied length. It is designed for projects where the lighter .080 LD post class is not the right structural direction, while still remaining distinct from Aluglobus’ heavier .120/.125-wall 3-inch HD post options.

Choose post & cap options ↑ View specifications ↓

12 ft supplied length

6063-T6 · 3″ square · 12 ft · .090 HD · Custom Color

Profile3″ × 3″

Length12 ft

Wall.090″

ClassHeavy Duty

Grouped cap3″ Flat Press Cap · Custom Color

The .090 wall is the defining specification

The .090 HD identity matters just as much as the 3-inch outside size.

Aluminum posts should be compared by outside size, wall thickness, alloy, length and application. This grouped SKU explicitly identifies a 3″ × 3″ × 12 ft Heavy Duty post with a .090 wall and 6063-T6 aluminum, giving specifiers a clearer technical basis than the older standalone custom-color listing.

3″ × 3″ footprintA substantial square post size that works visually with larger fence panels, privacy systems and gate openings.

.090″ HD wallMore wall material than the .080 Light Duty family, giving the post a higher structural class for compatible applications.

6063-T6 is verified on this grouped SKUThe grouped product page itself publishes 6063-T6, so the alloy no longer needs to be inferred from the black sibling. Project-specific load and footing values still require verification.

.090″ wall
HD class

Conceptual cross-section · not to scale

Custom finish planning

A 12 ft structural post should match the architecture, not be forced into an unrelated stock color.

Aluglobus’ aluminum fence program offers custom powder coating in any RAL color, with matte, satin, textured and gloss options. That lets the 3-inch HD post coordinate with fence panels, gates, exterior trim, cladding, windows and other metalwork across the property.

White & light neutralsReduce the visual weight of tall structural posts and work naturally with bright stucco, coastal and minimalist architecture.

Grey & anthraciteCreate a contemporary structural line that pairs with modern windows, garage doors, roofing and darker façades.

Bronze & earth tonesCoordinate with masonry, stone, wood-look aluminum and warmer architectural palettes.

Texture & glossMatte, satin, textured and gloss choices affect how a tall post reflects light and how prominent it appears in the finished elevation.

Pure White direction

Light Grey direction

Anthracite direction

Terra Brown direction

Architectural Bronze direction

Metallic / specialty direction

Screen swatches are design references only. Confirm the physical powder code, gloss, texture and required architectural coating specification before production.

Why 12 feet matters

Long stock gives more flexibility for tall fences, deeper approved support and changing grade.

A 12-foot extrusion is useful when standard 8-foot posts do not provide enough total length for the approved finished height and structural mounting. The extra stock can also simplify field cutting across projects with changing elevations.

Taller approved layouts

More stock length gives designers and installers room for taller fence conditions when the .090 HD class is appropriate.

More embedment flexibility

Longer material leaves more post available below grade when the project-specific footing design requires it.

Grade changes

Sloped and stepped properties often require different final cut lengths along one fence run.

Field-cut versatility

Starting with 12 ft allows the installer to cut down after finished elevations are confirmed instead of starting short.

Important: 12 ft is supplied stock length, not a universal finished fence height or footing depth. Structural mounting must still be sized from the actual project loads and site conditions.

Grouped post + cap configuration

Select the HD post and matching 3-inch flat press cap from the same product.

The exact grouped SKU contains two independently selectable quantities: the 3″ × 3″ × 12 ft HD Square Post (.090 Thk) – Custom Color and the 3″ Flat Press Cap – Custom Color.

Grouped structural profile

3″ × 3″ × 12 ft · .090 HD · 6063-T6 · Custom Color

Heavy-duty architectural aluminum square post with 12-foot supplied length, published .090-inch wall and verified 6063-T6 alloy.

Grouped finishing component

3″ Flat Press Cap · Custom Color

Matching low-profile cap for the 3-inch square post family, selected separately within the grouped product so cap quantity can follow the actual number of exposed post tops.

Quantity planning: post and cap quantities are selected independently. Count structural post locations first, then add flat press caps only for the exposed 3-inch post tops that require them.

Choose grouped options ↑

Technical specifications

Use the exact SKU values, then keep engineering values project-specific.

The exact grouped product confirms a 3″ × 3″ profile, 12 ft supplied length, Heavy Duty .090-wall construction, 6063-T6 aluminum, custom color, and a grouped 3″ Flat Press Cap – Custom Color.

Specification boundary: wall thickness and alloy are verified on this grouped SKU, but the page does not publish allowable load, engineered wind rating, universal post spacing or one fixed footing size. Those values remain project-specific.

Product: 3×3 in. x 12 ft. HD Square Post (.090 Thk) – Custom Color + Cap
Cross section: 3″ × 3″ square
Supplied length: 12 ft
Wall thickness: .090″
Class: Heavy Duty
Material: 6063-T6 architectural aluminum
Finish: Custom powder-coated color
Grouped cap: 3″ Flat Press Cap – Custom Color
Fence use: Compatible aluminum fence and privacy systems requiring a 3″ HD support
Gate use: Compatible gate-support conditions after hinge loads and foundation are verified
Grouped configuration: Post and cap are separate selectable quantities within the same grouped product
Engineering: Confirm wind, load, spacing and footing requirements for the specific project

Separate length from structural class

Twelve feet solves a stock-length problem. HD wall class solves a load problem.

A longer extrusion can provide more embedment or finished-height flexibility, but it does not automatically make the post suitable for every tall fence or gate. The correct support still depends on wall thickness, panel area, wind exposure, spacing and gate leverage.

Decision	3.15″ .080 LD family	3″ .090 HD custom-color post	When to escalate
Wall class	.080″ Light Duty	.090″ Heavy Duty product identity	When engineering requires more than the selected HD post provides
Outside size	3.15″ square	3″ square	Outside dimensions alone do not determine capacity
Long stock	8 ft and 11 ft LD options	12 ft	Use more length only when the mounting or finished height requires it
Gate use	Compatible lighter conditions	HD gate-support context	Large leaves, automation and high wind area may require project-specific engineering
Submittal rule	Use published LD SKU values	.090 and 6063-T6 are published on this grouped SKU	Confirm project-specific loads, spacing and footing separately

Applications

Where a 12 ft .090 HD post can make sense.

Use the HD post where the project benefits from additional wall thickness and long stock, but still verify the actual loads before assuming .090 is enough for every heavy condition.

Residential

Tall privacy fencing

The live product is positioned for tall privacy fencing where extra post length and Heavy Duty construction are appropriate for the verified design.

Perimeter

Large boundary & horizontal slat systems

The 3-inch square profile provides a substantial support line for residential and commercial perimeter systems, including horizontal slat fencing where the project-specific load design supports the post selection.

Grade

Sloped & stepped sites

Twelve-foot stock creates more field-cut flexibility where finished elevations change across the property.

Gate support

Compatible hinge conditions

Use after leaf size, wind area, hinge geometry, automation and foundation are checked against the post class.

Commercial

Architectural partitions & security fencing

The live product page specifically includes commercial fencing, architectural partitions and security-fence applications among its intended uses.

Coastal

Aluminum exterior support

Aluminum avoids iron-oxide rust and is a strong material direction for humid and salt-air fence environments when the finish and installation are properly maintained.

System context

A 12 ft custom-color HD post should be specified as part of the complete fence or gate system.

These Aluglobus system images illustrate how posts, panels, gates and finishes work together. They provide design context rather than claiming every pictured project uses this exact custom-color SKU.

Aluglobus aluminum gate and fence system with structural support posts — Heavy-duty support should be selected from the complete gate or fence load path

Aluglobus aluminum fence installation and post alignment detail — Long posts make accurate alignment and footing layout more important

Aluglobus powder coated aluminum finish detail — Factory-finished aluminum keeps the long support profile visually consistent

Profile size, wall thickness, cap and mounting belong in one specification

Custom powder-coated finish

Specify the color and coating performance together.

The grouped SKU is the custom-color version of the .090 HD post and matching flat press cap. Aluglobus’ broader aluminum fence program offers any RAL color, matte, satin, textured and gloss options, supported by 7-stage preparation and AAMA-grade UV-resistant architectural finish positioning.

Any RAL colorCoordinate the post with fence panels, gates, exterior trim, landscape features and adjacent architectural metalwork.

7-stage preparationAluglobus describes its broader fence finishing process as multi-stage preparation followed by architectural powder coating.

AAMA-grade program contextThe fence program is marketed with an AAMA-grade UV-resistant finish. Confirm the exact coating specification required for this individual post before submittal.

Low-maintenance exteriorThe live product page positions the custom powder coat as corrosion-resistant, UV-resistant and suitable for coastal, humid and high-heat environments.

White / light architectural

Grey / anthracite

Bronze / earth tone

Metallic / specialty

Installation planning

Twelve-foot posts need the footing, alignment and final elevation solved before installation.

The live product supports concrete footings, deep-set structural use, gate hinge support, trimming with proper metal-cutting tools and integration into modern fence systems. Treat those as installation options, then size depth and anchoring from the real project rather than a generic rule.

Before installation: verify that .090 HD is appropriate, then confirm post spacing, finished height, soil, wind exposure, gate loads, footing or base design and local requirements.

Start with the verified HD specification

The grouped SKU publishes .090 wall and 6063-T6. Use those values as the product basis, then verify project-specific loads, spacing and foundations separately.

Map every support role

Separate line posts, corners, ends and hinge posts because one wall class may not be correct everywhere.

Establish finished elevations

Use a laser, level or string line to determine how much of the 12-foot extrusion is actually needed at each location.

Design the structural mounting

Size concrete footings, bases or other supports from the real loads, soil and site conditions.

Set posts plumb in both directions

Long posts amplify small base errors, so verify vertical alignment before concrete or structural fasteners are finalized.

Sight the full run

Check the complete post line before installing fence panels or gate hardware.

Cut only after elevations are confirmed

Use suitable non-ferrous cutting equipment, protect the finish and deburr the final cut.

Install the 3-inch cap

Clean the finished post top and install the matching black aluminum cap after final cuts and alignment are complete.

Gate-support decision

The live product includes gate support, but hinge loads still need to be checked.

Aluglobus specifically lists gate hinge support and continuous gate-system use among the applications for this custom-color post. That establishes a real gate-use context without making one 3-inch post universally correct for every driveway or pedestrian gate.

Gate use is supported by the product pageThe custom-color listing includes gate support structures and gate hinge support among its intended applications.

Wind claims need engineeringThe live page markets the post for tall and high-load applications, but allowable wind pressure is not published. Verify loads for tall privacy panels and exposed sites.

Automation changes the load caseMotorized gates add dynamic forces and may require a different post, reinforcement, hinge arrangement or foundation than a stationary fence support.

Maintenance

Custom powder-coated aluminum keeps routine care simple.

The live product page positions this post as a low-maintenance exterior support. Routine care is mainly about keeping the powder-coated surface clean and inspecting the complete fence or gate system rather than repainting, oiling or staining the post.

Mild cleaning

Use water and a mild cleaner when dirt, salt or environmental residue builds up on the powder-coated surface.

No staining cycle

Unlike wood support posts, the aluminum profile requires no oil, sealing or staining as part of routine maintenance.

Protect the coating

Avoid unnecessary abrasion during installation and address chips or field damage according to the approved finish-repair method.

Inspect the system

For gates and taller fences, periodically inspect fasteners, hinges, alignment and foundations because structural performance depends on the complete installation.

Frequently asked questions

Know exactly what the 3″ × 3″ × 12 ft .090 HD Custom Color + Cap grouped product contains.

This grouped SKU gives you a verified .090 wall, verified 6063-T6 alloy, custom-color post and matching flat press cap, with independent quantity control for each component.

What are the exact post dimensions?

The grouped product lists a true 3-inch by 3-inch square post supplied in a 12-foot length.

What is the wall thickness?

The exact grouped SKU publishes a .090-inch wall and identifies the post as Heavy Duty.

What aluminum alloy is used?

The grouped product page explicitly publishes 6063-T6 for this custom-color post-and-cap SKU.

What cap is included in the grouped product?

The grouped selector contains a 3-inch Flat Press Cap in Custom Color as a separate selectable quantity alongside the post.

Are the post and cap quantities linked?

No. They are separate quantity fields inside the grouped product. Order the number of posts required by the layout and the number of caps required for exposed post tops.

Can I choose a custom RAL color?

Aluglobus advertises custom powder coating in any RAL color across its aluminum fence program, with matte, satin, textured and gloss options. Confirm the exact powder code and availability before production.

Can this post be used for tall privacy fencing?

Yes, the underlying post listing includes tall privacy fencing among its intended applications. Actual wind load, spacing and footing still need to be verified for the specific design.

Can this post support a gate?

The underlying post listing includes gate hinge support and gate support structures among its applications. Actual suitability depends on leaf width, weight, wind area, hinges, automation and foundation design.

Can the 12-foot post be trimmed shorter?

Yes. The underlying post page states that it can be trimmed with proper metal-cutting tools. Protect the custom finish and deburr the final cut.

What maintenance does the custom-color post need?

Routine care is mainly mild cleaner and water as needed. The aluminum post does not require oil, sealing or staining, while the complete fence or gate system should still be inspected periodically.

Factory-direct heavy-duty aluminum posts

Specify the HD post, cap quantity and custom finish before the 12 ft material goes into production.

Select the 3″ × 3″ × 12 ft .090 HD 6063-T6 custom-color post and matching 3-inch flat press cap from the grouped options, or send Aluglobus the fence or gate layout when you need help confirming quantities, support conditions or the finish package.

Choose product options ↑Request project support

Aluglobus Aluminum Systems · Grouped HD custom-color post + cap · Fence systems · Gate systems · Nationwide supply

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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!"

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@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."

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"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!"

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Mercedes Benz Engineer

Valley One Gates & Access

"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

	3x3 in. x 12 ft. HD Square Post (.090 Thk) - Custom Color$263.90	3x3 in. x 12 ft. HD Square Post (.090 Thk) - Custom Color quantity
	3" Flat Press Cap - Custom Color$17.82	3" Flat Press Cap - Custom Color quantity

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