Our plastic fence posts and gravel boards from Eco-Fencing Wood Grain. Eco- Fencing is manufactured from 92% recycled PVC-u materials. When you buy Wood Grain you can rest assured you are protecting the world’s natural resources and helping the environment. The plastic fence post and gravel boards can be used with wooden fence panels or several gravel boards can be slotted into the posts to make a complete Wood Grain fencing panel. Once erected, Eco-fencing systems do not require annual maintenance. The gravel boards are dual faced so they can be appreciated from both sides and they will accept timber paint if required.