iO HVAC Controls CD-3018-BM 30 X 18 Carrier/Bryant Zone Damper - Bottom MountiO HVAC Controls CD 3018 BM ACTUATORS ARE INSTALLED ON 2ND DIMENSION 30 x 18 Carrier Bryant Zone Damper Bottom Mount 30 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 3018 BM BrandiO HVAC Controls