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KLAASWOOD is a manufacturer of thermally modified wood products. All products are sourced, modified, and manufactured in the USA. KLAASWOOD uses an innovative, second-generation hydrolysis technology that is changing the landscape of modified wood. KLAASWOOD is highly specialized in modification, so all our products achieve Class 1 durability and offer a 20-year warranty. Through innovation, we push the boundaries of wood modification technology. We make high-performing and beautiful modified wood accessible to all, today and for generations to come.