Master Mark 24-in. Splash Block protects your foundation and landscaping from damaging rainwater runoff. Featuring a sloped angle, it effectively directs water away from your homes, foundation. The rock-faced pattern reduces the gushing at the end of your gutter downspout, minimizing mulch and landscaping washout. Designed to fit under most downspouts, these splash blocks are made of durable HDPE plastic and require no anchoring to withstand the elements. UV-resistant, they maintain their color over time.