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Rain Bird VBJMB6EXTB 6" Jumbo Valve Box Extension - Body Only

Rain Bird VBJMB6EXTB 6" Jumbo Valve Box Extension - Body Only

Brand: Rain Bird
Save 63%
$110.37
$41.35
SKU VBJMB6EXTB

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Engineered for easier installation and reliable access, this 6" Jumbo Valve Box Extension (body only) adds depth where needed to bring irrigation valves to finished grade. Durable design and practical features reduce install time and help protect valve assemblies during backfill.

  • 6" Jumbo extension raises VB Series valve boxes to required depth; body only, lid not included.
  • Black finish for low visibility in turf and landscape beds.
  • Pre-scored knock-outs for fast, tool-free pipe placement; knock-outs slide back to seal against dirt.
  • Bolt-hole knock-out helps block small animals when a locking bolt is not used.
  • Shovel access slot makes lid removal faster and safer during service.
  • Engineered to maintain horizontal and vertical integrity under load, even with knock-outs removed.

Compatible with Rain Bird VB Series valve boxes. For detailed dimensions and installation instructions, see the VB Series Valve Boxes brochure linked on this product page. Ideal for contractors and homeowners who need a dependable, serviceable valve box extension.

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Frequently Asked Questions

What exactly is included when the listing says 'body only'?
The 6" extension body is included; the lid and additional adapters are not included.
Will this extension fit my existing Rain Bird VB Series valve box?
Fits Rain Bird VB Series valve boxes to add depth and bring valves to finished grade.
How do the pre-scored knock-outs simplify installation and service?
They allow quick pipe entry without cutting; knock-outs slide back to seal and keep dirt out.
How should I protect the extension during backfill and heavy loads?
Use proper bedding material, avoid concentrated heavy loads over the box, and compact soil evenly around it.

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