DURA²® is the unique solution for high-end fencing applications, whose quality has been proven since 2019, thanks to an enhanced unique and patented process with multiple impregnations and several dryings, based on the well-known Tanalith® E wood preservative system and Tanalith® colour system. Above this, DURA² offer you a guarantee of 20 years for Class 4 +, subject to registration at time of installation. Visit https://www.dura2.uk/customer-guarantee-registration to register.