Acme Miami 95006 6 in. Motorized Damper - Silver 2-wire spring return dampers 24 Volts AC actuator: Dia: 6".Position: N/C. Power Open. Increased Torque. Quieter Operation. Country of Origin: USA. Dimensions: 10.5"Lx10.5"Wx9"H. Weight: 3.5 lbs.