Mutual Materials ManorStone About: ManorStone is a monolithic block which is great for small to medium walls or constructing steps. These blocks are heavy and lock in place with a lip on the back which engages the previous course. Because of their solid construction, they don’t require coping units, although we source options for a fully finished look. Manorstone is available in three colors and also has an “angle side” unit for creating curved walls. The blocks are 6 in high.