10" Round Green Lid Only for Dura 100-101 Valve Box & Replaces Carson 910 Lid - Engraved: Irrigation Control Valve 10" Round Green Lid Only for Dura 100-101 Valve Box & Replaces Carson 910 Lid - Engraved: Irrigation Control Valve Made with HDPE (High Density Polyethylene) Fits valve boxes with an ID of 9-1/8" with a collar depth of 1-3/4".