Topp Industries - FSR30X12 - Fiberglass Septic Riser With 30" Opening - 12" Height and it's not attached to

and it's not attached to anything to come up from the ground

Easily installed and removed with one bolt

End caps will fit either end of the trench drain

Independent research has shown the A100-12 decreases TSS by 50-90% and CBOD5 by 20-40%

Topp Industries - FSR30X12 - Fiberglass Septic Riser With 30" Opening - 12" Height and it's not attached toTopp Industries Fiberglass Septic Riser With 30" Opening 12" Height TOPP corrosion resistant polyethylene septic tank risers eliminate the need to cut tubing from awkward lengths. Risers are available for bolt on or concrete cast in work. 6 inch septic tank risers extensions are also available. Risers and extensions are lightweight and UPS shippable. Our popular fiberglass cover securely fits TOPP poly risers and extensions. Literature