Galvanised Steel Post Caps

Galvanised steel post caps seal the open tops of retaining-wall steel posts — keeping out water and debris and giving the wall a finished look. Profile-matched to H, C, 45°, LH and RH posts. Sold individually. Australian-made, delivered Australia-wide by Retaining Walls Direct.

Written and product-checked by the Retaining Walls Direct team — supplying retaining wall hardware across Australia. Last updated: June 2026.

Galvanised steel post caps

Caps protect the post top from water ingress and long-term corrosion, and tidy the exposed ends of your steel posts. Hot-dip galvanised to match the post finish.

Which cap do I need?

• H Post Cap — suits 100UC H-beam middle posts
• C Post Cap — suits 100PFC C-channel end posts
• 45° Post Cap — suits 45° angle posts
• LH / RH Post Cap — left- and right-hand caps for L-shaped and joiner posts

Order one cap per post. Browse all retaining wall hardware.

Buying with confidence

• Australia-wide delivery — caps ship by courier, combined with your order where possible.
• Google-reviewed service and trade support.
• Returns: see our returns & delivery policy.

Get a quote or contact the team.

Frequently asked questions

How do I choose the right cap?
Match the cap to your post profile — H, C, 45°, LH or RH (see above).

Are they sold individually?
Yes — order one cap per post.

Can you deliver to me?
We deliver across most of Australia. Send your details for a quote.