Models
Attenuator
RACA - Crosstalk Attenuator
Air Balancing Devices • Opposed Blade Dampers
OBD-L - Grille Mount • Steel • Long Blades
OBD-S - Grille Mount • Steel • Short Blades
OBD-A-L - Grille Mount • Aluminum • Long Blades
OBD-A-S - Grille Mount • Aluminum • Short Blades
OBDD-L - Duct Mount • Steel • Long Blades
OBDD-S - Duct Mount • Steel • Short Blades
OBDD-A-L - Duct Mount • Aluminum • Long Blades
OBDD-A-S - Duct Mount • Aluminum • Short Blades
OBDO - Duct Mount • Steel • Oval Collar
OBDR - Duct Mount • Steel • Round Collar
Fire Rated
907FL - Combination Fire & Volume Damper (Canada Only)
Mounting Frames
PF - Plaster Sub Frame
Transitional Collars
SR - Square to Round Adaptor
SR-O - Square to Round Adaptor for use with an OBD