External Eco H4 Pine is treated against insect attacks and moisture decay and then kiln-dried to ensure a longer-lasting product. It is suitable for external inground use, and being a Laminated H4 post, it is resistant to twisting and warping and will remain straight throughout its life time. A non-arsenic treatment makes it safe for your family and your pets. Bone Stocks this in a range of lengths 88 x 88mm