Open on both ends, 78 lb Recharger® 902HD addresses needs of high-volume stormwater management systems by offering bare chamber storage capacity of 17.66 ft³/ft within installed dimensions of 3.67 ft x 78 in. x 48 in. Chamber offers minimum installed storage of 27.27 ft³/ft when installed with stone. Joined using overlapping rib connection, each chamber includes side portal feature that allows connections to take place at any point within system.