Tigre
12" x 17" x 6" Rectangular Valve Box Extensions
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description

12" x 17" x 6" Rectangular Valve Box Extensions
12" x 17" x 6" Rectangular Valve Box Extensions are durable add-on enclosures designed to increase the height and capacity of compatible Tigre DuraPlastic 12" x 17" rectangular valve boxes. Molded from high-strength, UV-resistant high-density polyethylene (HDPE), these extension bodies provide long-term protection for irrigation, water, and electrical systems.
Each extension adds 6" of nominal height to a compatible valve box installation. The stackable design allows installers to combine extension bodies with compatible valve box bodies and lids to accommodate installation depth requirements. Available in green, purple, and black.
Product Highlights
- 12" x 17" x 6" rectangular extension body
- Adds 6" of nominal height to compatible valve boxes
- High-strength HDPE construction
- UV-stabilized and impact-resistant material
- Corrosion-resistant construction
- Stackable design with interlocking edges
- Designed for compatible 12" x 17" valve boxes
- Light-duty SCTE rating
- Suitable for pedestrian and landscape applications
- Available in green, purple, and black
- Made in the USA
- Extension body only; lid sold separately
Available Sizes & Colors
| Nominal Size | Color | Part Number | SKU | Weight |
|---|---|---|---|---|
| 12" x 17" x 6" | Green | B121-X | 100025573 | 3.975 lb |
| 12" x 17" x 6" | Purple | B123-X | 100025321 | 3.975 lb |
| 12" x 17" x 6" | Black | B124-X | 100025577 | 3.975 lb |
Technical Specifications
| Brand | Tigre DuraPlastic |
|---|---|
| Product Type | Rectangular Valve Box Extension - Body Only |
| Nominal Dimensions | 12" x 17" x 6" |
| Nominal Extension Height | 6" |
| Shape | Rectangular |
| Material | High-Density Polyethylene (HDPE) |
| Material Properties | UV-Stabilized, Impact-Resistant, Corrosion-Resistant |
| Design | Stackable with Interlocking Edges |
| Application Rating | Light-Duty SCTE |
| Typical Applications | Irrigation, Water, Electrical, Pedestrian and Landscape Areas |
| Available Colors | Green, Purple, Black |
| Part Numbers | B121-X, B123-X, B124-X |
| Unit Weight | 3.975 lb |
| Country of Manufacture | USA |
| Included Component | One Rectangular Extension Box Body |
| Lid | Not Included |
| Complete Valve Box | Not Included |
Product Details
Additional Installation Depth
The 6" extension body increases the nominal height of compatible rectangular valve box installations. Multiple compatible components can be combined to accommodate system depth requirements.
Durable HDPE Construction
Molded from high-strength, UV-stabilized HDPE for corrosion resistance, impact resistance, and long-term use in underground utility access installations.
Stackable, Interlocking Design
Interlocking edges are designed to provide secure stacking with compatible valve box components, helping maintain alignment during installation.
Light-Duty Applications
Designed for light-duty SCTE applications, including pedestrian and landscape areas. Confirm site loading requirements before installation.
Available Color Options
Choose green (B121-X), purple (B123-X), or black (B124-X). Each option has the same nominal dimensions and listed weight.
Body-Only Configuration
Each selection includes one rectangular extension body. Compatible valve box bodies and lids are sold separately.

Product Resources & Support
Review the product documents below for additional valve box specifications and product information. Need help selecting an extension or confirming compatibility? Contact the GetPipe.com team.
Frequently Asked Questions
What size are these valve box extensions?
Each extension measures 12" x 17" x 6" nominally and provides an additional 6" of nominal enclosure height.
What material are these extensions made from?
The extensions are molded from high-strength, UV-stabilized high-density polyethylene (HDPE), offering corrosion and impact resistance.
What colors are available?
Green, purple, and black. Each color has a separate manufacturer part number and SKU.
Can these extensions be stacked?
Yes. The stackable design includes interlocking edges for use with compatible rectangular valve box components.
Are these suitable for pedestrian and landscape areas?
These extensions are described for light-duty SCTE applications, including pedestrian and landscape installations. Confirm the required loading classification for your project.
Is a lid included?
No. These are extension bodies only. Lids are sold separately.
Does the extension include a complete valve box?
No. Each selection includes one extension section only. Complete valve box assemblies are separate products.
How much does each extension weigh?
Each extension weighs 3.975 lb.
Will these extensions fit my existing valve box?
These extensions are intended for compatible Tigre DuraPlastic 12" x 17" rectangular valve boxes. Confirm the existing box part number and mating dimensions before ordering.
Where can I find additional specifications?
The Valve Box Spec Sheet and Valve Box Catalog are available in the Product Resources & Support section above.
Important Ordering Notes
This listing is for 12" x 17" x 6" Rectangular Valve Box Extension Bodies Only. Lids and complete valve box assemblies are not included. Select the correct color and manufacturer part number, and verify compatibility with your existing valve box and installation requirements.