Carson 12201028 12" x 20" x 12" Black Jumbo Rectangular T-Cover ICV Enclosure. Home owners have a never-ending list of maintenance concerns from season to season. Worrying about valve or meter boxes should never cross their minds. A broken valve box is not just an unsightly distraction from a home’s curb appeal; it also creates a safety hazard for children and pets playing outside. Oldcastle Infrastructure delivers dependable durability to protect, conceal, and access residential irrigation system or water meter components.