Corner & Joiner Posts

Corner & Joiner Posts — 45° and 90° Galvanised Steel Posts for Retaining Wall Corners

Corner and joiner posts are purpose-built galvanised steel posts designed to handle changes in direction in a concrete sleeper retaining wall. Available in 45° and 90° configurations across both 100 Series and 150 Series, they provide a clean, structurally sound connection at wall corners, returns, and L-shaped layouts without the need for site-fabricated solutions.

Corner Post Options

• 45° Corner Joiner — 100 Series — for angled wall layouts at standard residential specification
• 90° Corner Joiner — 100 Series — for right-angle corners at standard residential specification
• 45° Corner Joiner — 150 Series — for angled wall layouts at heavy duty specification
• 90° Corner Joiner — 150 Series — for right-angle corners at heavy duty specification

Choosing the Right Corner Post

Match your corner post series to the series used for your standard wall posts. If your wall uses 100 Series posts, use 100 Series corner joiners. If your wall uses 150 Series posts, use 150 Series corner joiners. Mixing series is not recommended as section sizes and slot dimensions differ.

See our full post ranges: 100 Series Posts — 150 Series Posts — 200 Series Posts. For help with corner wall design, read our Retaining Wall Corner Guide.