Castle 12" Gray Castle Wall Stackable Retaining Wall Block. This versatile block is ideal for mortar-free walls, allowing you to create straight or curved applications with ease. Use it to build planters, garden borders, tree rings, and small retaining walls. The recommended maximum wall height is 2'.
WARNING: May cause skin irritation. May cause serious eye irritation. May cause an allergic skin reaction. Respirable dust may contain crystalline silica, known to cause cancer. May cause respiratory irritation. Causes damage to lungs through prolonged or repeated exposure For more information go to www.P65Warnings.ca.gov