Connecting piece for Advanced Filter System cartridges. This manifold connects to 1/8″ or 1/4″ tubing with stainless steel compression fittings and includes check valves to protect gas lines during cartridge changes.Connecting piece for Advanced Filter System cartridges. This manifold connects to 1/8″ or 1/4″ tubing with stainless steel compression fittings and includes check valves to protect gas lines during cartridge changes. Packaged: 6-1/2″ x 6-1/4″ x 3″ Cardboard box. Weight: 861.8 g