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, 2.45m, and 3.0m 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.