What is this galvanized square steel tube used for?

It is used as an internal reinforcement or connector for compatible Alumission aluminum fence and gate posts, including concrete-set posts, core-drilled installations, and extended sliding-gate frames.

What size is the tube?

The outside dimensions are 1-1/4″ × 1-1/4″ with a 1/8″ wall thickness.

Can it be used to extend a sliding-gate frame?

Yes. It can act as an internal splice between compatible aluminum post sections when a sliding-gate frame must be longer than 10′. Confirm adequate overlap and fastening for the project.

Is the tube galvanized?

Yes. The steel tube has a galvanized finish for improved corrosion resistance.

Which Alumission posts can sleeve over it?

It is intended for compatible Alumission aluminum posts with an inner cavity designed to receive a 1-1/4″ × 1-1/4″ tube. Verify the receiving profile before ordering.

What lengths are available?

Choose a 4′, 6′, or 8′ tube from the length selector.

How is it installed in a core-drilled hole?

For the typical Alumission method, core drill a 2″ hole, set the galvanized tube with compatible anchoring cement, allow it to cure, and then sleeve the aluminum post over the tube.

Can the steel tube be set directly in concrete?

Yes. It may be set directly in a concrete foundation where the project design and site conditions allow.

How do I secure the aluminum post after sleeving it over the tube?

Use suitable #12 self-drilling screws to fasten the aluminum post to the internal steel tube.

Are #12 screws included?

No. #12 self-drilling screws and other installation materials are sold separately.

Does this product provide a structural load rating?

No project-specific load rating is stated. Confirm local code, footing, embedment, wind-load, and engineering requirements before installation.

1-1/4 inch galvanized square steel tube with 1/8 inch wall thickness

1-1/4 inch galvanized square steel tube dimensional drawing without a fixed-length callout

Close-up of a 1-1/4 inch galvanized square steel tube on a clean white background

1-1/4″ × 1-1/4″ Galvanized Square Steel Tube – 1/8″ Wall

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1-1/4″ × 1-1/4″ galvanized square steel tube with a 1/8″ wall. Available in 4′, 6′, and 8′ lengths for Alumission post reinforcement, concrete installations, core drilling, and post extensions.

Price range: $33.57 through $67.14

Length

Clear

WHAT’S INCLUDED:

1-1/4″ x 1-1/4″ 1/8″ wall and 4′ long square steel tube 4′. To use when installing aluminum fence in dirt with concrete foundation or a core drill installation.

Box Weight

Box Dimension

TECHNICAL SPECIFICATIONS & INSTALLATION

This 1-1/4″ × 1-1/4″ galvanized square steel tube provides internal reinforcement for compatible Alumission aluminum fence and gate posts. Its 1/8″ wall and galvanized finish make it suitable for concrete-set installations, core-drilled mounting, and post extensions.

Set the steel tube directly in concrete or install it in a 2″ core-drilled hole with compatible anchoring cement, then sleeve the aluminum post over it. Secure the aluminum to the inner steel tube using suitable #12 self-drilling screws. It may also connect two compatible aluminum post sections for extended frames, including sliding gates longer than 10′.

Questions & Answers

Find answers about sizing, included components, installation, compatible mounting surfaces, hardware, finishes, shipping, and returns for the Los Angeles Style Single Swing Gate Kit.

Sizing & Fit

How do I choose the correct Los Angeles gate kit size?

Measure the finished opening between the mounting surfaces at the top, middle, and bottom, then measure the available height. Use the smallest measurements and choose the smallest kit whose listed width and height are equal to or larger than your opening. The selected size is the maximum opening the kit can fit. For example, a 45″-wide opening requires the 4′-wide kit, which is cut to fit the actual opening.

How long should I cut the horizontal slats?

Install, level, and securely fasten both side posts first. Measure the actual opening between the installed side posts, then cut every horizontal slat exactly 8″ shorter than that measurement. For example, if the installed opening is 45″, cut each slat to 37″. Always use the final installed measurement, not only the nominal kit size.

What does Los Angeles Style look like, and is it full privacy?

Los Angeles Style uses 5.5″ horizontal aluminum slats with consistent 1/2″ gaps created by the included spacers. The narrow gaps provide a modern semi-private appearance while allowing limited airflow and visibility. It is not a full-privacy design.

Kit Contents & Finish

What is included in the Los Angeles Single Swing Gate Kit?

Each kit includes two aluminum side posts, two gate-frame profiles, matching channel and frame covers, gate and side-post stoppers, caps, 1/2″ spacers, two adjustable 4″ self-closing hinges, one Schlage keyed entry lever, and 100 stainless steel assembly screws. It also includes the Los Angeles Style 5.5″ slats: 8 for a 4′-high gate, 10 for a 5′-high gate, or 12 for a 6′-high gate.

What material and finish are used, and which colors are available?

The primary profiles are made from 6063-T6 architectural aluminum and finished with an exterior-grade powder coat. Aluminum does not rust like steel and requires minimal maintenance. Available finishes are Black, Bronze, White, Dark Gray, Light Gray, and Wood. Select a color to see its current availability and lead time.

Installation & Mounting

Can the included side posts mount to concrete, masonry, wood, or steel?

Yes, provided the mounting surface is stable and strong enough to support the gate. The two aluminum side posts can be mounted to concrete columns, masonry, properly reinforced wood framing, steel posts, and other suitable structures using the correct surface-specific fasteners. Anchors and mounting bolts are not included because the required type and length depend on the substrate.

Is this a DIY gate kit, and does it require welding?

Yes. The kit is designed for mechanical DIY assembly and does not require welding. Installation requires accurate measuring, cutting, drilling, leveling, and secure anchoring. Review the complete installation video and four-page illustrated guide in the product gallery before starting. Use a qualified installer when the mounting surface or structural support is uncertain.

Hardware, Shipping & Returns

Are the included gate hinges self-closing and adjustable?

Yes. Every Los Angeles Single Swing Gate Kit includes two adjustable 4″ self-closing hinges. After the gate is hung, leveled, and aligned, follow the hinge instructions to set the closing tension for smooth, controlled operation.

Is a lock included, and can I install a deadbolt or smart lock?

The kit includes one Schlage keyed entry lever. The 1-3/4″-deep gate frame can also be prepared for many standard levers, deadbolts, latches, and compatible smart locks. Before drilling, confirm the selected hardware’s backset, bore size, clearance requirements, and gate handing.

How does shipping work, and can I return the gate kit?

Free shipping is included. Current production time is shown with the selected finish; special colors and Wood finishes typically ship within 4–8 weeks. Standard kits may be returned within 30 days of delivery when unused, uninstalled, and in their original condition. The customer pays return shipping, and there is no restocking fee. Damaged or defective items are replaced according to Alumission’s return policy.