iO HVAC Controls CD-3218-BM 32 X 18 Carrier/Bryant Rectangular Zone Damper - Belimo 3 Wire Actuator - Bottom MountiO HVAC Controls CD 3218 BM ACTUATORS ARE INSTALLED ON 2ND DIMENSION 32 x 18 Carrier Bryant Rectangular Zone Damper Belimo 3 Wire Actuator Bottom Mount 32 x 18 Carrier Bryant Compatible Zone Damper Bottom Mount Belimo 3 wire 15 second actuator, compatible with Carrier Infinity and Bryant Evolution Systems, 24V Actuator 10 YEAR WARRANTY Additional Information Item NumberCD 3218 BM BrandiO HVAC Controls