You are here:AllTimber Fencing Bird's Mouth Fencing Bird Mouth Fencing The Bird Mouth post & rail fencing is traditionally known as knee rail fencing. It is a popular type of fencing that is strong and attractive. It is commonly used around children's play areas and car parking areas. showing records 1 - 4 of 4 Sections All Timber Fencing Timber Posts Wall Plates / Joists Closeboard Fencing Materials Palisade Fencing Bird's Mouth Fencing Bird's Mouth Post £10.14 - + Add Bird's Mouth Strap £4.02 - + Add 75 mm x 75 mm Post £10.54 - + Add 100 mm x 100 mm Post £18.72 - + Add showing records 1 - 4 of 4