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

$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-color finish for coordinated fence, gate, and architectural
applications.

Post Size
3″ × 3″

Length
12 ft

Wall Thickness
.090″

Finish
Custom Color

Material
6063-T6 Aluminum

Classification
Heavy-Duty Square Post

Cap Option
Matching 3″ Flat Press Cap Available

Profile
Square Architectural Aluminum

Finish Option
Custom Architectural Color

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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Categories: Aluminum Fences - DIY Fence Kit Post, Individual Profiles, Posts

Description

Product Description

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

A 12 ft heavy-duty square post with the finish freedom to match the project.

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

3″ square · 12 ft · .090 HD · Custom Color

Profile3″ × 3″

Length12 ft

Wall.090″

ClassHeavy Duty

FinishCustom powder coat

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 class, length and application. This product is identified as the 3″ × 3″ × 12 ft .090 HD custom-color post. The current custom-color catalog copy describes Heavy Duty reinforced architectural aluminum but does not independently publish a wall value in its technical table, so engineered submittals should confirm the production-order wall thickness.

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.

Confirm engineered valuesThe current black sibling is explicitly published as .090 and 6063-T6. For a custom-color structural submittal, confirm wall thickness and alloy on the production order rather than assuming every finish variation is identical.

.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.

Standalone HD post + optional finishing accessory

The custom-color post is sold on its own. Add a matching 3-inch cap only when the project needs one.

The live custom-color product is a standalone post listing. Aluglobus separately lists a 3″ Aluminum Cap – Custom Color in its gate-parts selector, so the cap should be treated as an optional accessory rather than part of this post SKU.

Primary product

3″ × 3″ × 12 ft · .090 HD · Custom Color

Heavy-duty architectural aluminum support profile with long-stock flexibility and a custom powder-coated finish.

Optional accessory

3″ Aluminum Cap · Custom Color

Compatible finishing cap for true 3-inch square posts, available separately when the exposed post top requires a coordinated custom-color finish.

Ordering clarity: this page represents the standalone custom-color post. The compatible 3-inch custom-color cap is a separate accessory and should only be added in the quantity required by the actual project.

Choose post options ↑

Technical specifications

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

The live custom-color product confirms a 3″ × 3″ profile, 12 ft supplied length, Heavy Duty reinforced architectural aluminum construction and a custom powder-coated finish. The .090 wall designation is retained as the current product identity, while engineered submittals should confirm the wall and alloy on the production order.

Specification boundary: the custom-color product page does not independently publish a wall value, alloy designation, allowable load, engineered wind rating, universal spacing or fixed footing size in its technical table. Confirm those values when a permit, engineer or project specification depends on them.

Product: 3×3 in. x 12 ft. HD Square Post (.090 Thk) – Custom Color
Cross section: 3″ × 3″ square
Supplied length: 12 ft
Wall thickness: .090″
Class: Heavy Duty
Material: Architectural-grade aluminum; exact alloy to be confirmed for structural submittals
Finish: Custom powder-coated color
Optional cap: 3″ Aluminum Cap – Custom Color, sold separately
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
Reference sibling: Current black 3″ × 12 ft HD sibling is explicitly published as .090 and 6063-T6
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 SKU values	Confirm wall and alloy on custom-color production order	Do not transfer sibling specifications without verification

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 live product confirms a custom powder-coated finish. 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.

Confirm the HD post specification

Verify the .090 wall and alloy on the production order when engineering or permitting depends on those values.

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 what the 3″ × 3″ × 12 ft .090 HD custom-color post is before ordering it.

The important decisions are the 12 ft stock length, verified HD role, custom finish, gate or fence loads and the values that need confirmation for engineering.

What are the exact outside dimensions?

The live custom-color product page lists a 3-inch by 3-inch square profile supplied in a 12-foot length.

Is this the .090 Heavy Duty version?

The product identity used for this page is the 3×3 in. x 12 ft. HD Square Post (.090 Thk) – Custom Color. Because the live custom-color specifications table does not independently show the wall value, confirm .090 on the production order when engineering depends on it.

What aluminum alloy is used?

The custom-color product page says architectural-grade aluminum but does not publish a SKU-specific alloy in its specifications table. The current black .090 sibling is published as 6063-T6, but confirm the exact custom-color alloy for structural submittals.

What finish does the post use?

The live product confirms a custom powder-coated finish. Aluglobus also advertises RAL matching and a broader range of matte, satin, textured and gloss architectural finishes.

Is a 3-inch custom-color cap included?

No. The live custom-color post is a standalone product. Aluglobus separately lists a 3-inch Aluminum Cap in Custom Color that can be added when the project requires a capped post top.

Can this post be used for tall privacy fencing?

Yes, tall privacy fencing is one of the applications listed on the live product page. Actual post spacing, wind load and footing design still need to be verified for the specific fence.

Can this post support a gate?

The live product page includes gate hinge support and gate support structures among its intended uses. The actual hinge post must still be checked against leaf width, weight, wind area, automation and foundation design.

Is it suitable for coastal and humid environments?

The live product is marketed for coastal environments, humid climates, high heat and changing weather. Aluminum avoids iron-oxide rust, while the powder-coated surface adds exterior protection.

Can the 12-foot post be cut shorter?

Yes. The live product page states that it can be trimmed with proper metal-cutting tools. Protect the powder-coated finish and deburr the final cut.

How should the custom finish be specified?

Approve the physical powder code, gloss, texture and required architectural coating specification before production. Aluglobus’ broader fence program offers any RAL color with 7-stage preparation and AAMA-grade UV-resistant finish positioning.

Factory-direct heavy-duty aluminum posts

Confirm the post specification and custom finish before the 12 ft extrusion goes into production.

Select the 3″ × 3″ × 12 ft .090 HD custom-color post from the product options, or send Aluglobus the fence or gate layout when you need help confirming the support specification, finish package or compatible 3-inch cap.

Choose product options ↑Request project support

Aluglobus Aluminum Systems · Custom-color heavy-duty aluminum posts · Fence systems · Gate systems · Nationwide supply

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"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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"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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