The 509B Reinforced Kraft Union Liner is a high-quality, durable material ideal for construction and building applications. With dimensions of 1.8m x 50m, this liner provides an ample coverage area of 90m2 per roll. The reinforced kraft union material ensures superior strength and longevity, making it suitable for both indoor and outdoor use. This liner is designed to withstand harsh weather conditions, making it a reliable choice for your construction projects.