Double-sided cap creates a seamless and attractive finish to your wall. Light weight and versatile. Secures to insignia wall units using exterior grade concrete adhesive. This cap can also be used to build accent walls up to 4 inches high. Color, dimensions, weight and textures may vary slightly due to natural materials used during manufacturing; check your local store for precise information. Lowe’s Insignia 12-in L x 3-in H x 7-in D Brown/Charcoal Blend Retaining Wall Block in Gray | KICBC