4" Height Flexible - WeatheringStraightcurve's 4" Weathering Steel Edging offers versatile applications. It effectively contains invasive grasses, defines subtle garden borders, and separates mulch from gravel pathways with elegance. Folded lip, no sharp edges. Notched lip system for increased flexibility and consistent flexible behavior. CorTen panels arrive in their natural state and will develop a natural rust patina when exposed to weather. Easy click connect system Compatible