Maximize storage volume using a smaller footprint with the NDS StormChamber® system. This stormwater management powerhouse features an open bottom, arch-shaped chamber that allows it to work in both permeable and non-permeable soils to ensure the stormwater best management practices (BMPs) work at the highest removal rate possible. This modular subsurface drainage chamber can be configured in rows and also layered to meet job site requirements. The 41 in. high unit features a minimum of 147 cubic feet of storage and internal chamber volume of 88 cubic feet. Place the middle unit (or multiple middle units) between the start unit and end unit to form a row. To increase storage, additional rows can be interconnected with pipe from side portals. StormChamber units are made of thermoformed high-density weight polyethylene, engineered to withstand extreme environments, exceeds the AASHTO H-20 design load, and allow for deeper cover than other systems. Use included SedimenTrap™ devices to capture sediments and help extend the lifespan of the system.