iO HVAC Controls CD-2812-BM 28 X 12 Carrier/Bryant Rectangular Zone Damper - Belimo 3 Wire Actuator - Bottom MountiO HVAC Controls CD 2812 BM ACTUATORS ARE INSTALLED ON 2ND DIMENSION 28 x 12 Carrier Bryant Rectangular Zone Damper Belimo 3 Wire Actuator Bottom Mount 28 x 12 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 2812 BM BrandiO HVAC Controls