Orbit 53211 Sprinkler System 10-Inch Circular Valve Box (Discontinued by Manufacturer)
The 10-Inch circular valve box is made with durable long lasting material. This valve box is ideal for sprinkler valves or drip manifolds and comes with an easy snap on lid.  product dimensions are 9 ½” diameter at the top, 12 7/8”  diameter at the bottom and the height is 10 ½”