Request Tank Quote
Request Building Quote
FRP Mocoat Fiberglass Ltd
Plan My Tank
Request Tank Quote
Request Building Quote
1 (866) 722-6246

Extensions List in Canada

Product Details
Product Specification
Extensions

Belled Extensions – Ball Tanks & 5’D Series

Part NumberDescription
C – EXT – 24 x 12 – BELL24″D x 12″L Belled Extension
C – EXT – 24 x 24 – BELL24″D x 24″L Belled Extension
C – EXT – 24 x 30 – BELL24″D x 30″L Belled Extension
C – EXT – 24 x 36 – BELL24″D x 36″L Belled Extension
C – EXT – 24 x 48 – BELL24″D x 48″L Belled Extension
C – EXT – 24 x 60 – BELL24″D x 60″L Belled Extension
C – EXT – 24 x 72 – BELL24″D x 72″L Belled Extension
C – EXT – 24 x 84 – BELL24″D x 84″L Belled Extension
C – EXT – 30 x 12 – BELL30″D x 12″L  Belled Extension
C – EXT – 30 x 24 – BELL30″D x 24″L Belled Extension
C – EXT – 30 x 30 – BELL30″D x 30″L Belled Extension
C – EXT – 30 x 36 – BELL30″D x 36″L Belled Extension
C – EXT – 30 x 48 – BELL30″D x 48″L Belled Extension
C – EXT – 30 x 60 – BELL30″D x 60″L Belled Extension
C – EXT – 30 x 72 – BELL30″D x 72″L Belled Extension
C – EXT – 30 x 84 – BELL30″D x 84″L Belled Extension
C – EXT – 30 x 96 – BELL30″D x 96″L Belled Extension

Flanged Extensions – B(8′ Diameter) & BX(10′ Diameter) Series

Part NumberDescription
C – EXT – 30 x 12 – FL30″ D x 12″ L Flanged Extension
C – EXT – 30 x 30 – FL30″ D x 30″ L Flanged Extension
C – EXT – 30 x 36 – FL30″ D x 36″ L Flanged Extension
C – EXT – 30 x 48 – FL30″ D x 48″ L Flanged Extension
C – EXT – 30 x 60 – FL30″ D x 60″ L Flanged Extension
C – EXT – 30 x 84 – FL30″ D x 84″ L Flanged Extension
C – EXT – 30 x 96 – FL30″ D x 96″ L Flanged Extension

Lids – 24″ Diameter

Part NumberDescription
C – LID – 24″ – STD24″D standard lid
C – LID – 24″ – POLY8NV24″D lid with 8″ poly non-vented clean out lid insert (sewage)
C – LID – 24″ – POLY8V24″D lid with 8″ poly vented lid insert (water)

Lids – 30″ Diameter

Part NumberDescription
C – LID – 30″ – STD30″D standard lid
C – LID – 30″ – POLY8NV30″D lid with 8″ poly non-vented clean out lid insert (sewage)
C – LID – 30″ – POLY8V30″D lid with 8″ poly vented lid insert (water)

Product Specification

Belled Extensions – Ball Tanks & 5’D Series

Part NumberDescription
C – EXT – 24 x 12 – BELL24″D x 12″L Belled Extension
C – EXT – 24 x 24 – BELL24″D x 24″L Belled Extension
C – EXT – 24 x 30 – BELL24″D x 30″L Belled Extension
C – EXT – 24 x 36 – BELL24″D x 36″L Belled Extension
C – EXT – 24 x 48 – BELL24″D x 48″L Belled Extension
C – EXT – 24 x 60 – BELL24″D x 60″L Belled Extension
C – EXT – 24 x 72 – BELL24″D x 72″L Belled Extension
C – EXT – 24 x 84 – BELL24″D x 84″L Belled Extension
C – EXT – 30 x 12 – BELL30″D x 12″L  Belled Extension
C – EXT – 30 x 24 – BELL30″D x 24″L Belled Extension
C – EXT – 30 x 30 – BELL30″D x 30″L Belled Extension
C – EXT – 30 x 36 – BELL30″D x 36″L Belled Extension
C – EXT – 30 x 48 – BELL30″D x 48″L Belled Extension
C – EXT – 30 x 60 – BELL30″D x 60″L Belled Extension
C – EXT – 30 x 72 – BELL30″D x 72″L Belled Extension
C – EXT – 30 x 84 – BELL30″D x 84″L Belled Extension
C – EXT – 30 x 96 – BELL30″D x 96″L Belled Extension

Flanged Extensions – B(8′ Diameter) & BX(10′ Diameter) Series

Part NumberDescription
C – EXT – 30 x 12 – FL30″ D x 12″ L Flanged Extension
C – EXT – 30 x 30 – FL30″ D x 30″ L Flanged Extension
C – EXT – 30 x 36 – FL30″ D x 36″ L Flanged Extension
C – EXT – 30 x 48 – FL30″ D x 48″ L Flanged Extension
C – EXT – 30 x 60 – FL30″ D x 60″ L Flanged Extension
C – EXT – 30 x 84 – FL30″ D x 84″ L Flanged Extension
C – EXT – 30 x 96 – FL30″ D x 96″ L Flanged Extension

Lids – 24″ Diameter

Part NumberDescription
C – LID – 24″ – STD24″D standard lid
C – LID – 24″ – POLY8NV24″D lid with 8″ poly non-vented clean out lid insert (sewage)
C – LID – 24″ – POLY8V24″D lid with 8″ poly vented lid insert (water)

Lids – 30″ Diameter

Part NumberDescription
C – LID – 30″ – STD30″D standard lid
C – LID – 30″ – POLY8NV30″D lid with 8″ poly non-vented clean out lid insert (sewage)
C – LID – 30″ – POLY8V30″D lid with 8″ poly vented lid insert (water)

Frequently Asked Questions

Are FRP septic tanks approved for use in Washington State?
Yes. Every FRP septic tank we manufacture meets or exceeds CSA Standard B66, a key compliance benchmark for wastewater containment. These tanks are suitable for use across Washington in residential, industrial, and remote applications, where code-compliant, environmentally safe septic solutions are required.
We offer a variety of sizes to accommodate different needs – from small-capacity tanks for cabins and tiny homes, to larger systems for full-time residences, work camps, and commercial setups. Our team can help you select the right size based on your expected usage and site conditions.
With proper installation and maintenance, fiberglass septic tanks can last 40 years or more. Their corrosion resistance and seamless construction help prevent leaks and structural failures, even when buried underground for decades. That’s why many Washington property owners choose fiberglass over concrete or steel.
Washington’s coastal zones, like those around Seattle or Bellingham, deal with high groundwater and fluctuating soil conditions. Fiberglass septic tanks are non-corrosive and watertight, making them a great fit for these environments. Their lightweight nature also allows for easier placement without the need for heavy equipment, even in challenging terrain.

Related Products

Below Ground - Ball Tanks

Ball Tanks in Washington

Double-Wall Fiberglass Tanks

Double-Wall Fiberglass Tanks in Washington

Toilet Tank

Toilet Tank in Washington

Above Ground Img

Above-Ground FRP Tanks in Washington

Below Ground

Below-Ground Tanks in Washington

6' Tank Above Ground

6′ Diameter Above Ground