Skip to content
Green NDS 318BC Pro-Spec 13 x 20 jumbo valve box with overlapping ICV lid, showing ribbed corrugated walls, built-in pipe opening, and bolt hole.

NDS 318BC Pro-Spec 13" x 20" Jumbo Valve Box & Lid

Brand: NDS
Save 25%
$247.86
$185.90
SKU 318BC
In Stock (2)

Notify me when back in stock

NDS 318BC Pro-Spec 13" x 20" Jumbo Valve Box & Lid provides a durable, commercial-grade enclosure to conceal and protect irrigation control valves, backflow components, and wire splices. Engineered for landscapers and contractors, it resists the elements and everyday lawncare traffic while keeping equipment accessible for routine service.

  • Durable UV-stabilized HDPE construction with structural reinforcing ribs for strength without excess weight.
  • 13 in. x 20 in. footprint with a 12-5/8 in. overall height—room for jumbo valves and multiple components.
  • Overlapping ICV-marked cover prevents debris entry and can be lifted by hand or levered with a flat screwdriver.
  • Built-in pipe openings let piping pass through the walls so the box does not rest on the pipe, simplifying connections.
  • Bolt hole includes a preinstalled brass nut; cover can be secured with a 2-1/2 in. x 3/8 in. bolt (not included) or optional locking hardware.
  • Corrugated sidewalls and reinforced lid are engineered to withstand pedestrian traffic and routine lawn-care equipment.

Manufacturer literature, installation details, and product specifications are provided by NDS for planning and specification. Designed for both commercial and residential irrigation projects, the 318BC combines long-term durability with convenient access for maintenance. For best performance, position the box so pipe entries align with required service lines and keep the lid seat clear of soil and debris.

Reviews

Frequently Asked Questions

What are the external dimensions and height of this valve box?
External footprint is 13 in. x 20 in.; overall height is 12-5/8 in., sized for jumbo irrigation valves and multiple components.
What material is the 318BC made from and is it UV resistant?
The 318BC is molded from UV-stabilized HDPE (Pro-Spec series) and is engineered to resist sun exposure and routine lawn-care wear.
Does the lid lock or include a bolt?
The overlapping cover keeps debris out; the box includes a preinstalled brass nut and can be secured with a 2-1/2 in. x 3/8 in. bolt (not included).
Can this box be used with irrigation control valves and pipe connections?
Yes—the cover is marked ICV and the box features built-in pipe openings so piping passes through the wall without the box resting on the pipe.