Orbit 53215 Sprinkler System 20-Inch-Shallow Valve Box
Extension valve boxes can be used in locations where the standard-height valve box isn't tall  enough. It is made of the same durable, long-lasting materials as the standard valve boxes to keep  your valves free from sand and dirt and the impact of weather. Extension valve boxes are available  in 12 In. and 20 In. sizes.