Articulating chambers Arc 36, Arc 36 HC, Arc 24 and Arc 18 articulating corrugated chambers from Advanced Drainage Systems are designed as an economical alternative to gravel and pipe leachfields. An optional side port coupler snaps into the center or either end of the chamber for cleanout access without affecting the 10-degree articulation. A diamond-plate pattern on the chambers and couplers provides a non-slip surface. 800/733-7473; www. ads-pipe.com.Ready to install The Model J-500CF nutrient reduction system from Jet Inc. uses intermittent aeration and additional filtration to reduce total nitrogen in effluent. The prefabricated unit meets NSF Standard 40 and 245
