Guide · Fence Posts
Fence Post Sizes — A Trade Reference
A practical guide to selecting steel post size, length and finish for residential, commercial, security and rural fencing.
Specification & Supply
Post size is driven by fence height, wind exposure, panel weight and spacing. The sizes below cover the typical Australian fencing range, supplied in SHS or CHS, cut-to-length and capped, with mill direct on bulk project orders — subject to availability.
- Residential timber/colorbond infill: 50×50 SHS or 50NB CHS
- Standard commercial mesh / tubular: 65×65 SHS or 50NB CHS
- Heavy commercial / security: 75×75 SHS or 65NB CHS
- Heavy gate posts: 89×89 / 100×100 SHS or 89NB / 114NB CHS
- Rural strainer / corner posts: 89NB or 114NB CHS
- Standard post lengths: 1.8 / 2.1 / 2.4 / 2.7 / 3.0 m
Specifications
Trade Reference| Residential (1.5–1.8 m fence) | 50×50 SHS or 50NB CHS · 2.1–2.4 m post · footing ~600 mm |
|---|---|
| Standard Commercial (1.8–2.1 m) | 65×65 SHS or 50NB CHS · 2.7 m post · footing ~600–750 mm |
| Heavy Commercial / Security (2.1–2.4 m) | 75×75 SHS or 65NB CHS · 3.0 m post · footing ~750–900 mm |
| Gate Posts | 89×89 / 100×100 SHS or 89NB / 114NB CHS — sized to gate leaf and span |
| Rural Strainer / Corner | 89NB / 114NB CHS — concrete footed, with stay assemblies |
| Standard Lengths | 1.8 / 2.1 / 2.4 / 2.7 / 3.0 m — cut-to-length on request |
| Finish | Pre-galv for sheltered duty · HDG (AS/NZS 4680) for coastal / industrial |
Why contractors buy steel from us
Trade WholesaleMill direct supply
Sourced direct from Australian and approved overseas mills — bulk pricing without the merchant markup.
AS/NZS compliant
Steel manufactured to recognised Australian Standards. Mill certificates supplied on request for engineered jobs.
Cut to length
Mill lengths, standard fencing lengths or cut-to-size packs — palletised ready for site.
Australia-wide freight
Direct truck loads, part loads and palletised freight to metro, regional and remote project sites.
Bulk & project quantities
From single pack to full mill order — priced for fencing contractors, fabricators and infrastructure programs.
Trade-only pricing
We supply the trade — fencing contractors, fabricators, steel merchants, landscapers and government buyers.