Catalogue

C Posts

C posts are the end posts of a concrete sleeper retaining wall. Each is a hot dipped galvanised steel channel that holds sleepers on one side, used where the wall stops or steps in height. Choose the series to suit your sleeper thickness and the length to suit your wall.

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Shop C Posts by type

All steel postsGalvanised steel H, C and corner posts to hold your sleepers.Shop All steel posts → H posts (joiners)Sit between sleepers along a straight run and hold a sleeper on each side.Shop H posts (joiners) → Corner postsTurn the wall through 90 or 45 degrees with a single post.Shop Corner posts → Reo postsH posts with welded reinforcing bar for taller or loaded walls.Shop Reo posts →

1 product

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Send a drawing or product schedule with sizes and quantities so the team can review your list.

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Prices include GST. Freight calculated separately.

Not sure which C Posts (Ends) you need?

Text us your wall height and length, or a photo of your site, and we'll point you to the right product.

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Text 0420 120 105 Call 1300 211 390

Hot dipped galvanised

A zinc coating for increased durability in the ground.

For wall ends

Holds sleepers on one side, where an H post would leave an open channel.

Sized to your sleepers

Series designed to fit each sleeper thickness.

Stocked steel

Delivery is usually within 1–5 business days.

Choose the right product

Where C posts go.

A straight wall needs two C posts, one at each end, with H posts between. Add one more wherever the wall steps down in height.

Retaining wall calculator
PositionPostWhy
Each end of the wallC postSleepers on one side only
Between sleepersH postSleepers on both sides
Change of directionCorner postSleepers from two directions
Step in wall heightC post, or a longer H postTo the wall design

Post size, length and footing depth come from your wall design. In Queensland, walls over 1m high generally need an engineer's design and council approval.

Complete the job

Everything else the job needs, in the same order.

H Posts (Joiners)Sit between sleepers along a straight run and hold a sleeper on each side.Shop H Posts (Joiners) → Corner PostsTurn the wall through 90 or 45 degrees with a single post.Shop Corner Posts → Concrete SleepersPlain and patterned sleepers in 75–80mm and 100mm thicknesses.Shop Concrete Sleepers → Fence BracketsBolt a Colorbond or timber fence to your retaining wall posts.Shop Fence Brackets →

Order planning

Delivery, lead times and logistics

Delivery

Steel posts are long, heavy loads delivered by truck. Tell us about narrow access, steep driveways or overhead obstructions. Unloading equipment is not automatically included.

Lead time

Stocked lines. Usually delivered in 1–5 business days. We confirm the date with you before you pay.

Freight is priced to your delivery suburb for most metro areas, or will be confirmed with you before payment.

Delivery and pick up options are shown on each product. Wait for our confirmation before arranging transport or attending for pick up.

Questions

Before you order.

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What is a C post?

A C post is a steel channel used as the end post of a sleeper wall. The material is structural steel, hot dipped galvanised after it is made. It is suitable for the ends of residential and commercial walls.

Do C posts have pre drilled holes?

Standard C posts are plain channel. Some steel posts are supplied with pre drilled holes so a fence bracket can be attached. Check the product details, or ask us before you order.

Is installation different from an H post?

No. The post is set in concrete to the depth in your wall design, and the sleepers slot in from the top. One open side is the only difference, which makes for easy installation at the end of a run.

Is there a warranty on C posts?

Warranty is given by the manufacturer and varies by product. Contact us through the contact form with the post you are looking at and we will send the terms.

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C Posts delivered near you

Guides

Know before you build