NDS 115 Standard Series Extension with Overlapping Cover, 14-Inch by 19-Inch by 6-Inch, Green NDS 115 measures 12" x 17" x 6", Residential/commercial grade standard series valve boxes are offered in a wide range of sizes Overlapping covers prevent dirt and grass from settling between body and cover NOTE: The top dimensions are 14" x 19" x 6". The bottom dimensions are 12" x 17" x 6" and All rectangular boxes include a brass insert. Bolts may be easily added for lock down purposes