One-Way Fence and Tunnel Entrance
Introduction to the system

The ACO Wildlife One-Way Fence and Tunnel Entrance is a recycled composite small animal guidance system that prevents animals from encroaching on dangers areas, allowing them to access the ACO Climate Tunnel and cross the road safely.

The ACO One-Way Fence and Tunnel Entrance system prevents small animals from moving into hazardous areas and guides them to a tunnel under the road.image

Animals are prevented from climbing into the danger area by the concave front face and lip of the fence, while the convex rear means that they can climb out of the danger area to safety. The ACO Tunnel Entrance funnels them into the ACO Climate Tunnel itself.

The front of the fence is supported by a 950mm composite post.

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  • Made from recycled materials.
  • Fence panel has 50mm rebated lap section at joint.
  • Lightweight.
  • Guides small animals to the ACO Climate Tunnel.
  • Curved front face with anti-climbing lip at top.
  • Can be backfilled with soil.


  • Recyclable at end of life.
  • Accommodates thermal expansion and gradient changes.
  • Easy to install.
  • Reduces the risk to animals on roads.
  • Small animals can crawl from the back of the fence to safety, but cannot climb in the other direction.
  • Reduced visual presence from carriageway.

Recommended applications

  • Highways
  • Residential developments
  • Construction sites
  • Distribution yards
  • Industrial estates
  • Rail developments
  • Nature conservation areas
  • Areas identified for mitigation measures

Not recommended applications

  • NBS Plus Product Specification
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