Add an extension if you need extra room. The extension is 6" tall.
The Pro Series valve boxes were designed for the professional contractor and heavy-duty use, and offer superior strength for non-residential and utility applications.
All-Pro Series Valve Boxes and lids are manufactured in Lindsay, California, and contain UV inhibitors to prevent discoloration and cracking.
Valve BOX and Valve COVER are NOT included with the EXTENSION.
Above diagram is of the COVER ONLY (Not Included with Extension)
NDS-117-6 EXTENSION ONLY
This diagram reflects the VALVE BOX (NDS-117BC) that the EXTENSION fits. Valve BOX is NOT included with the EXTENSION. Use these dimensions to determine if the EXTENSION will properly fit your current valve BOX.