From what I can see of your above picture yours are down leg.
Annular boosters are larger in diameter, and thicker, and that is why the reduced CFM rating when they are used.

Mark


1996 Ram 1500 Sport
1968 road runner
1952 Sears Allstate licensed, pump gas, Hemi 5.98 @ 115.73 1.33 60 ft. The best is yet to come. Painless Performance / Street RODDER magazine Top 100 for 2019