DuraPost capping rails are manufactured from AA 6063 Grade Aluminium to BS EN 12020-1:2008 The capping rails provide a greater protection for any timber fence as well as enhancing the appearance. Manufactured in lengths of 1.8m and 2.45m and available in four matching colours to complement your fence posts: Anthracite Grey RAL 7016, Olive Grey RAL 7002, Sepia Brown RAL 8014 and Black RAL 9005. All capping rails are powder coated to BS-13438 and are salt spray tested to 1,000 hours to BS 3900F4, impact resistance to BS 3900E3, scratch resistance to BS 3900E2, and humidity minimum 1,000 hours to BS3900F2.