Septic Tank Riser & Lid / Distribution Box / Drywell / Catch Basin
- Heights may vary slightly.
- All tanks are manufactured with 4,000 psi, 6 bag mix concrete with .45 water / cement ratio and Mid Range Water Reducer.
- Outer walls are 3" thick and reinforced with 3/8" rebar. Placement indicated with
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- 250 Gallon & 500 Gallon Intermediate Sections are reinforced on all 4 sides with wire mesh.
- Heavy Duty, Extra-Reinforced Tanks are available in all 3 sizes.
- Allow an extra 3" height to top thickness
