3.15×3.15 in. x 8 ft. LD Square Post (.080 Thk) – Black + Cap

$14.36 – $95.74

Aluglobus Light-Duty Aluminum Post

3.15″ × 3.15″ square aluminum post with an 8 ft length and .080″ wall
thickness. Designed for light-duty fence and outdoor applications where
a clean, corrosion-resistant aluminum support is required, finished in
black and supplied with a matching flat press cap.

Post Size
3.15″ × 3.15″

Length
8 ft

Wall Thickness
.080″

Color
Black

Material
6063-T6 Aluminum

Classification
Light-Duty Square Post

Included
8 ft Post + 3.15″ Flat Press Cap

Primary Use
Light-Duty Fence & Outdoor Applications

Corrosion Resistance
Rust-Resistant Aluminum Construction

Profile
Square Architectural Aluminum

Light-duty profile:
intended for applications where a .080″ wall post provides appropriate
support. 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

3.15″ Square Post · 8 ft · LD .080 · Black

A larger 3.15″ square post in a more efficient 8 ft length, with a clearly defined .080 LD wall.

The 3.15×3.15 in. x 8 ft. LD Square Post (.080 Thk) – Black + Cap combines a broad 3.15-inch square footprint with a published .080-inch Light Duty wall in a practical 8-foot stock length. It is the shorter alternative to the 11 ft LD version when the approved finished height, mounting and embedment do not require extra material, while remaining clearly separate from Aluglobus’ .125-wall HD post family.

Choose post & cap options ↑ View specifications ↓

8 ft supplied length

3.15″ square · .080 wall · Light Duty

Profile3.15″ × 3.15″

Length8 ft

Wall.080″

ClassLight Duty

Cap3.15″ Flat Press Cap

What “LD .080” actually means

Outside size creates presence. Wall thickness defines the structural class.

A 3.15-inch square post looks substantial, but Aluglobus intentionally identifies this version as Light Duty because the aluminum wall is .080 inch. In the same gate-post selector, Aluglobus offers separate 3-inch .125-wall HD posts for heavier structural conditions.

3.15″ × 3.15″ footprintBroader than the compact 2×2 family, giving larger fence panels and gate openings a more substantial visual support.

.080″ wallThe published wall thickness makes the post class transparent and easier to compare against heavier options.

LD versus HDUse Light Duty where .080 is appropriate. Move to the separate .125-wall HD family when engineering, wind area or hinge loads require more wall material.

.080″ wall
Light Duty class

Conceptual cross-section · not to scale

Why choose the 8 ft version

Use the shorter stock when the project needs the 3.15″ footprint, but not the extra material of an 11 ft post.

Eight-foot stock is often the more efficient choice for standard-height residential and light-commercial conditions where the approved footing, finished elevation and grade can all be resolved within the available length.

Less excess material

When 8 feet is enough, the installer avoids paying for and cutting away unnecessary long-stock material.

Easier handling

Shorter extrusions are simpler to transport, stage and maneuver on many residential jobsites than 11 ft stock.

Standard-height planning

Use this length where the approved above-grade height and structural mounting fit comfortably within an 8-foot post.

Clear upgrade path

Move to the 11 ft LD version when more length is needed, or to the .125-wall HD family when the structural class itself must increase.

Important: 8 ft is supplied stock length, not a universal finished fence height or footing recipe. Confirm the actual mounting and embedment before ordering or cutting.

Post + cap

Finish the 3.15-inch square post with the matching flat press cap.

Aluglobus lists the 8 ft black LD post and the 3.15″ Flat Press Cap in the same gate post-and-cap selector, with the 11 ft LD version available separately when more stock length is required.

Structural profile

3.15″ × 3.15″ × 8 ft · .080 LD

Large-format square aluminum support profile with published .080-inch wall, 8-foot supplied length and black finish.

Finishing accessory

3.15″ Flat Press Cap

Low-profile top finish sized for the 3.15-inch post family, keeping the finished support clean and geometric.

Order from the actual layout: choose the number of posts required by the fence or compatible gate design, then add caps for the exposed 3.15-inch post tops.

Choose product options ↑

Technical specifications

The product publishes size, length and wall class. Project loads still need project answers.

Aluglobus publicly lists this option as a 3.15×3.15-inch Light Duty square post, 8 feet long, with .080 thickness and a black finish.

Specification boundary: the public selector does not publish the alloy, allowable load, universal wind rating, fixed post spacing or one footing size for this exact individual post.

Product: 3.15×3.15 in. x 8 ft. LD Square Post (.080 Thk) – Black + Cap
Cross section: 3.15″ × 3.15″ square
Supplied length: 8 ft
Wall thickness: .080″
Class: Light Duty, as labeled by Aluglobus
Material: Aluminum post profile
Color: Black
Matching cap: 3.15″ Flat Press Cap
Gate context: Listed as an optional post in Aluglobus Universal DIY gate configurations
HD alternative: 3″ .125-wall HD post family available separately
Finished height: Depends on approved mounting, embedment and final cut
Engineering: Confirm loads, wind, spacing and footing for the specific project

LD versus HD

The meaningful comparison is .080 wall versus .125 wall, not 3.15 inches versus 3 inches.

Aluglobus puts these post classes side by side in its gate selector. Similar outside dimensions can serve very different structural roles.

Decision	3.15″ × 3.15″ LD	3″ × 3″ HD family	What to verify
Wall	.080″ published	.125″ published on HD family	Which wall class does the design require?
Outside footprint	3.15″ square	3″ square	Is the choice visual, structural, or both?
Stock length	8 ft black LD option	8 ft and 12 ft HD options appear in Aluglobus selector	Is 8 ft enough, or does the project need the separate 11 ft LD version?
Gate support	Optional gate context, Light Duty class	Stronger direction for higher hinge loads	Leaf width, weight, wind area, automation and foundation
Best fit	Large-profile support where .080 is sufficient	Higher-demand fence and gate conditions	Use actual loads, not appearance alone

Applications

A bigger post can improve proportion without automatically becoming a heavy-duty post.

The 3.15-inch footprint works well where compact 2-inch posts would look undersized beside larger panels, taller fencing or wider architectural bays.

Residential

Larger fence panels

A broader black support can look more proportional beside substantial aluminum fence sections.

Privacy

Architectural screening

The larger footprint suits privacy designs visually, but full-privacy wind area must still be checked against the .080 LD class.

Efficiency

Standard-height runs

Eight-foot stock is a practical choice where the approved fence height and mounting do not require the extra length of the 11 ft LD version.

Gate system

Compatible lighter gate use

The post is offered in Aluglobus gate options, but hinge loads must be checked before using the LD profile as a gate support.

Commercial

Light-duty perimeter support

Useful where the larger visible profile is desired and the project does not require the separate .125 HD class.

Design-led

Substantial black verticals

The 3.15-inch square footprint creates a stronger architectural rhythm than compact post families.

Market perspective

Around the 3-inch size, heavier commercial and industrial aluminum posts commonly move to .125 walls.

Ultra Aluminum lists 3″ × 3″ commercial and industrial posts at .125 wall. That reinforces why this Aluglobus 3.15″ × 3.15″ .080 profile is appropriately identified as Light Duty instead of being marketed as HD based on outside size alone.

Market signal	Aluglobus 3.15″ LD	Heavier commercial direction
Outside size	3.15″ square	About 3″ square
Wall	.080″	.125″ commonly appears in heavier 3″ commercial / industrial offerings
Intent	Large footprint, lighter wall class	Higher structural class
Buying rule	Use where .080 meets the actual requirement	Upgrade where wind, privacy area or gate leverage requires more wall

System context

The 3.15″ post should be planned with panel proportion, alignment and finish.

These Aluglobus system images show the larger design context. They illustrate fence and gate applications and post proportion, not a claim that every pictured project uses this exact 8 ft SKU.

Aluglobus aluminum gate and fence system with substantial support posts — Larger post profiles create stronger architectural rhythm around gates and fences

Aluglobus aluminum fence installation detail — Alignment becomes more visible as posts get taller

Aluglobus black powder coated aluminum detail — Factory-finished aluminum supports a consistent exterior

Profile, wall class, cap and mounting belong in one specification

Installation planning

Eight feet is efficient only when the layout and mounting are resolved first.

Before concrete or structural fasteners are finalized, confirm that the 8-foot length is sufficient, then establish the post class, complete layout, finished elevations and approved mounting design.

Before installation: verify that .080 LD is suitable for the panel area or gate loads, then confirm spacing, grade, footing or base design and local requirements.

Confirm LD is the correct class

Review fence height, privacy area, wind exposure and gate loads before selecting .080 over the .125 HD family.

Map every support condition

Separate line, end, corner and gate positions so one post is not automatically used everywhere.

Confirm 8 ft is enough

Resolve the intended above-grade height and approved mounting or embedment before cutting any post.

Establish finished elevations

Use a laser, level or string line to determine the final top line and cut length.

Determine the structural mounting

Size footings or bases from actual soil, wind, fence height and load conditions.

Set plumb in both directions

Tall posts make small base errors more obvious, so verify vertical alignment carefully.

Sight the full run

Check the entire line before finalizing concrete or structural fasteners.

Install compatible panels or gate hardware

Use the connection details specified for the selected Aluglobus system and verified post role.

Install the flat press cap

After final cuts and alignment, clean the post top and finish it with the matching 3.15-inch cap.

Frequently asked questions

Know exactly what the 3.15″ × 3.15″ × 8 ft LD post is before ordering it.

The core distinction is simple: larger footprint, efficient 8 ft stock, .080 Light Duty wall.

What are the exact dimensions?

Aluglobus lists the post as 3.15 inches by 3.15 inches square and 8 feet long.

What is the wall thickness?

The published wall thickness is .080 inch.

Why is it called Light Duty?

Aluglobus separates this .080-wall post from its 3-inch .125-wall HD post family. The LD designation refers to structural class, not the visual size of the outside profile.

What cap fits it?

Aluglobus lists a 3.15-inch Flat Press Cap in the same post-and-cap selector.

Is the finished fence automatically 8 feet high?

No. Eight feet is supplied stock length. Final above-grade height depends on mounting, embedment and any field cut length.

Can this post be used for a gate?

It appears as an optional post in Aluglobus Universal DIY gate configurations, but suitability depends on leaf width, weight, wind area, hinges, automation and foundation.

When should I use the .125-wall HD post instead?

Use the heavier family when fence height, privacy area, wind exposure, spacing, hinge loads or engineering requirements exceed the .080 LD class.

When should I choose the 11 ft LD version instead?

Choose the 11 ft Light Duty post when the approved installation needs more stock for deeper embedment, taller finished height, larger grade changes or additional field-cut flexibility while remaining in the .080 LD class.

How deep should it be installed?

There is no universal depth. Footing and embedment depend on height, panel area, wind, soil, spacing, gate loads and local structural requirements.

What is the benefit of the 3.15-inch footprint?

It creates more visual presence than compact 2-inch posts and can look more proportional beside larger or taller fence panels. Structural capacity still depends on the .080 wall and complete installation design.

Factory-direct aluminum post profiles

Choose the structural class before the post becomes part of the architecture.

Select the 3.15″ × 3.15″ × 8 ft .080 LD post and flat press cap from the product options, or send Aluglobus the project layout when you need help deciding between 8 ft versus 11 ft stock or LD versus HD support.

Choose product options ↑Request project support

Aluglobus Aluminum Systems · Square aluminum posts · Fence systems · Gate systems · Nationwide supply

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@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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"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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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

	3.15x3.15 in. x 8 ft. LD Square Post (.080 Thk) - BL$95.74	3.15x3.15 in. x 8 ft. LD Square Post (.080 Thk) - BL quantity
	3.15" Flat Press Cap - Black$14.36	3.15" Flat Press Cap - Black quantity

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3.15×3.15 in. x 8 ft. LD Square Post (.080 Thk) – Black + Cap