BC Bowden Cable Control System
              DDF Backdraft Damper
              BDDR Round Backdraft Damper
              DAL Wall Louver
              DWFD Dynamic Fire Wall Damper
              FS3V2 Fire and Smoke Damper
              i3 Precision Balance Systems
              BDMB Multi-Blade Manual Balancing Damper
              APA Perforated Ceiling Diffuser
              BDRB Economy Balancing Round Damper
              BDSB Single-Blade Manual Balancing Damper
              BVE-BVF Brick Vent
              CDOB-CDPB Opposed Blade Control Damper
              CRD Ceiling Radiation Damper
              CDR-R Ceiling Radiation Damper - Round