6000-179 Sundance Dual Air Control Internal, Knob Stem, 1999-2006, Also used in 780 Series, 880 Series spas (2007+), and Elite Series spas (2011+)
USED IN:
Air Controls-Single, Up To 2006
Air Control, 2007+ 880 Series
Air Control 2011+ Elite Series
780 Series Air Control 2007+