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Snyder 500 Gallon Dominator Spherical Septic Tank

SKU: 9520-SII-ST21S |
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Part Number: 9520-SII-ST21S
Capacity: 500 Gallons
Dimensions: 60"L x 60"W x 63"H
Shipping Dimensions: 63.5"L x 63.5"W x 59.25"H
Availability:Out of Stock
Ships From: Anderson, CA
Technical Drawings
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Product Overview

The Snyder 500 Gallon Dominator Spherical Septic Tank is designed as one compartment septic tank. It has a unique spherical shape that provides maximum durability and strength. This tank is made with the highest quality rotationally molded polyethylene resin that is FDA approved for wastewater storage. This tank is made to be buried underground and can remain buried even when empty.  



  • 1 compartment septic tank.
  • Used for the storage of wastewater.
  • Constructed with rotationally molded polyethylene resin.
  • Its seamless construction makes it durable and resistant to cracks.
  • Made with FDA approved resin for wastewater storage.
  • 3-year manufacturer warranty.
  • Riser options available.
  • Single compartment tank with two 20" manholes.
  • Spherical shape provides maximum durability and strength.
  • Lightweight - can be transported in a pickup truck and carried by two people.
  • Rotationally molded rugged, one-piece tank with no seams to leak.
  • Plumbing installed.
  • Manhole Cover.
  • Designed to remain buried while empty.
  • Pump stand molded into bottom of the tank.
  • Molded-in handling lugs.
Part Number9520-SII-ST21S
Capacity500 Gallons
Dimensions60"L x 60"W x 63"H
Weight182 lbs.
AvailabilityOut of Stock
Technical Drawings & Guides
Technical DrawingsView Technical Drawing
Shipping Info
Shipping FromAnderson, CA
Freight Class400
Shipping Dimensions63.5"L x 63.5"W x 59.25"H
Shipping Weight182 lbs.

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