ARX2418x3AR (Abrasion Resistant) Panels: If your panels are going to travel and take a beating and you need the most durable product available, we recommend using one of our AR models. AR acrylic features 3M 906 Abrasion Resistant Coating on both sides. The 906 coating is 40 times more resistance to marring, scratching and chemical attack. AR acrylic can be cleaned with standard ammonia based cleaners and paper towels without worry of fogging. ARX2418 Height