- Distribution boxes are cast with 35 MPA strength concrete at 7 days with 5-7% air.
- Fiber reinforced.
- Inlet openings 50mm (2”) above outlets.
- Small distribution boxes have Plastic knockouts cast in.
- Knockouts Accomodate 1 1/2, 2", 3", and 4" PVC Pipes
- Description
Designed for up to one metre burial over top of tank, away from any vehicular traffic.
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