Often made of concrete, this simple device plays a vital role in ensuring the even distribution of wastewater across your leach field. This component ensures that effluent is evenly distributed across the leach field, preventing overloading and potential system. Understanding the installation and maintenance secrets of a concrete distribution box septic ensures its longevity and effectiveness. Proper installation often involves a professional excavator to prepare the site and a certified installer familiar with local regulations from the EPA. Furthermore. The Box Culvert brochure provides detailed information on Jensen precast box culvert systems, including available sizes, structural capabilities, joint options, and applications for roadway, drainage, and utility projects. Use this brochure for design, specification, and engineering review. There are no accessories for this item at this time. Concrete Strength - A minimum end product strength of 4,000. A&R STANDARD PRODUCT PRECAST CONCRETE DISTRIBUTION BOX DB-6 (REINFORCING DRAWING) CONEDDB6CP 6/8/2020 A&R LLC 7 Ruscitti Road New Windsor, New York, 12553 www. com 845-562-0640 4'-0" 6" 6" 5'-0" 6" 6" 6'-0" 7'-0" PLAN VIEWGENERAL NOTES: 1) CONCRETE TO TEST 4,000 PSI AT 28 DAYS.