Tigre
15" x 21" x 6" Rectangular Valve Box Extensions
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
Description

15" x 21" x 6" Rectangular Valve Box Extensions
15" x 21" x 6" Rectangular Valve Box Extensions are designed to extend compatible rectangular valve box installations. These Tigre DuraPlastic extensions are available in green, tan, purple, and black to accommodate different installation and color requirements.
Valve box extensions provide additional height when adapting an existing valve box installation to the surrounding grade. Select the appropriate color and confirm compatibility with the existing valve box before installation.
Product Highlights
- 15" x 21" rectangular configuration
- 6" extension height designation
- Designed for compatible valve box installations
- Available in green, tan, purple, and black
- Four color-specific part numbers
- Individual product weight of 5.66 lb
Available Colors & Part Numbers
| Size | Color | Part Number | SKU | Weight |
|---|---|---|---|---|
| 15" x 21" x 6" | Green | B151-X | 100025580 | 5.66 lb |
| 15" x 21" x 6" | Tan | B152-X | 100025581 | 5.66 lb |
| 15" x 21" x 6" | Purple | B153-X | 100025583 | 5.66 lb |
| 15" x 21" x 6" | Black | B154-X | 100025587 | 5.66 lb |
Technical Specifications
| Product Type | Rectangular Valve Box Extension |
|---|---|
| Brand | Tigre DuraPlastic |
| Nominal Size | 15" x 21" x 6" |
| Shape | Rectangular |
| Available Colors | Green, Tan, Purple, Black |
| Individual Weight | 5.66 lb |
| Product Family | Valve Box Components |
| Application | Extension of Compatible Valve Box Installations |
Product Details
Green Valve Box Extension
Part number B151-X, SKU 100025580. A green 15" x 21" x 6" rectangular valve box extension weighing 5.66 lb.
Tan Valve Box Extension
Part number B152-X, SKU 100025581. A tan 15" x 21" x 6" rectangular valve box extension weighing 5.66 lb.
Purple Valve Box Extension
Part number B153-X, SKU 100025583. A purple 15" x 21" x 6" rectangular valve box extension weighing 5.66 lb.
Black Valve Box Extension
Part number B154-X, SKU 100025587. A black 15" x 21" x 6" rectangular valve box extension weighing 5.66 lb.
Valve Box Height Adjustment
Extensions can provide additional height to compatible valve box assemblies where the surrounding installation grade requires adjustment.
System Compatibility
Confirm the extension's dimensions and connection fit with the existing valve box. Matching nominal dimensions alone does not guarantee compatibility.

Product Resources & Support
Review the valve box specification sheet and catalog for additional product information. Need assistance selecting the correct rectangular valve box extension or confirming compatibility with your existing valve box? Contact the GetPipe.com team for product support.
Frequently Asked Questions
What size are these valve box extensions?
All four configurations are identified as 15" x 21" x 6" rectangular valve box extensions.
What colors are available?
These extensions are available in green, tan, purple, and black.
What is the green extension part number?
The green extension is part number B151-X, SKU 100025580.
What is the tan extension part number?
The tan extension is part number B152-X, SKU 100025581.
What is the purple extension part number?
The purple extension is part number B153-X, SKU 100025583.
What is the black extension part number?
The black extension is part number B154-X, SKU 100025587.
How much does each extension weigh?
Each listed valve box extension weighs 5.66 lb.
Does this product include a valve box or lid?
These products are identified as valve box extensions, not complete valve box assemblies or replacement lids.
Will these extensions fit any 15" x 21" valve box?
Compatibility must be confirmed with the existing valve box. Verify the manufacturer's dimensions and mating configuration before ordering.
Important Ordering Notes
This listing is for 15" x 21" x 6" Rectangular Valve Box Extensions. Select the correct color before ordering. These are extension components rather than complete valve box assemblies. Confirm compatibility with your existing valve box, including mating dimensions and installation requirements.