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 £6.32 - + Add Bird's Mouth Strap £3.04 - + Add 100mm x 100mm Post £12.84 - + Add 75mm x 75mm Post £7.31 - + Add showing records 1 - 4 of 4