With a 20-degree integral articulating joint, the Arc 36LP is designed for challenging straight or contoured septic leach field installations, such as high groundwater conditions and other site restrictions. It also incorporates a “lock and drop” joint that provides a positive connection during installation and backfill. Other features of the 5-ft-long chamber include a universal inlet/outlet end cap, inspection vent ports with easy-to-remove knockouts and diamond plate texture for increased slip resistance.