This listing is for a complete air filter assembly from a 1979 Suzuki GS1000. This will include the 4 airbox to carb connectors.  Also appears that there are 2 chambers to this air filter assembly.  There is what appears to be an airbox, with chrome side pieces, right after the carbs.  This component connects to another airbox that contains the air filter.  Never seen quite an elaborate air filter set-up.