Damper Actuator, Spring Return, 175 Lb In (20 Nm), Two Position Control, 2 Internal Auxiliary Switches, 100 250 Vac, 5 HO3XMSTE GBTB525141 5"THERM 20 240F 2 Rango de Presion:0 a 1" w.c. GBTB525141 5"THERM 20 240F 2 CDTV 2D4B4 CDTV VOC XMTR Spring Return Two Position Control