PD - Perforated Diffuser
RD - Round Diffuser (Cone Type)
RD - Round Diffuser (Plate Type)
RD - Round Diffuser (Perforated Type)
SF - Swirl Diffuser
SFD - Swirl Floor Diffuser
BG - Bar Grille (Fixed)
BG - Bar Grille (Curve)
BG - Bar Grille (Removable Double Margin)
BG - Bar Grille (Removable Clip On)
