3x3 fence posts

3x3 fence posts (approx. 75mm x 75mm) are used across a range of construction tasks, from domestic fencing and boundary work to temporary structures and framework support. In modern building projects, they’re often specified for medium-duty fencing, small outbuildings, and as upright supports in bespoke timber frameworks. These posts offer a reliable square profile that makes them easy to align and fix in place using conventional methods like Postcrete or bolted anchors.

Builders can choose from treated softwood, hardwood, or composite timber depending on durability needs, ground contact, and expected lifespan. Historically, untreated hardwood was used for its resistance to decay, but pressure-treated softwood is now common practice. Posts are typically available in lengths from 1.5 metres to 2.4 metres (5ft to 8ft), and can be sawn, planed, or notched depending on the application.

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