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Rain Bird PVBJMBEXT 6-inch Jumbo Extension, Black/Green Lid

Brand: Rain Bird
Save 68%
Original Price $179.77
Current Price $57.83
SKU PVBJMBEXT

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The Rain Bird PVBJMBEXT 6-inch Jumbo Extension is a heavy-duty valve-box extension designed to extend the PVB Jumbo series or serve as a standalone 6-inch deep box. Made from durable, UV-stable composite, it offers reliable protection for irrigation valves, fittings, and wiring on residential or commercial sites.

  • Model: PVBJMBEXT — 6-inch (15 cm) black body with overlapping green lid.
  • Top opening: 21 3/8" L x 15 7/8" W — ample access for valve service.
  • Bottom opening: 22 15/16" L x 16 3/8" W x 6 5/8" H — fits PVB Jumbo footprint.
  • Overlapping lockable lid with skid-resistant texture improves safety on foot traffic.
  • Use alone as a 6" deep box or stack with PVB Jumbo boxes to increase depth.
  • Made in the USA; reinforced sidewalls and double-ledge lid support for long life.

Designed for professionals and contractors, this extension simplifies installations, reduces unnecessary digging, and provides a secure, serviceable enclosure that pairs seamlessly with Rain Bird PVB Jumbo valve boxes. Compatible with standard PVB Jumbo lids and accessories; consult the Rain Bird technical spec sheet for CAD drawings and mounting details.

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Frequently Asked Questions

What are the top and bottom opening dimensions?
Top opening: 21 3/8" L x 15 7/8" W. Bottom opening: 22 15/16" L x 16 3/8" W x 6 5/8" H.
Can this extension be used with the PVB Jumbo box?
Yes. PVBJMBEXT is designed to extend the PVB Jumbo series or be used alone as a 6" deep box for reduced digging.
Is the lid lockable and skid-resistant?
Yes. The overlapping lid includes a lockable design and skid-resistant textured surface for safer foot traffic.

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