AMES 0691842 4000SS 2 1/2" - 10" AIR GAP
Air gap and drain fitting for all sizes of the 4000SS or 5000SS
Febco 860/880 Air gap 2 1/2" - 10" 905213
Febco 2 1/2" -10" 860/880 and the LF860 and LF880 models air gap.