CBPS/CBPR Steel Curved Blade Perforated Supply/Return Diffuser

ACBPS/ACBPR Steel Curved Blade Perforated Supply/Return Diffuser
SCBPS Steel Curved Blade, One-Piece Perforated Supply/Return Diffuser

FBCS/FBR Steel Flat Back Perforated Supply/Return Diffuser
SBP Steel Shallow Back Perforated Supply
RFPS/RFPR Steel Removable Face Perforated Supply/Return
PDS Steel Perforated Supply Diffuser
PDSD Steel Perforated Diffuser Supply
PDR Steel Perforated Return Grille