| Return Shipping Will Be Paid By | Seller |
| All Returns Accepted | Returns Accepted |
| Item Must Be Returned Within | 30 Days |
| Refund Will Be Given As | Money Back |
| Compatible Brand | Synchron |
| Item Thickness | 1.5 inches |
| Shape | Round |
| Power Source | electric |
| Item Diameter | 2 in |
| Compatible Model | Two wire, Synchron |
| Country Of Manufacture | United States |
| MPN | 3150 |
| Material | Aluminum |
| Operation | Motorized |
| Brand | Synchron |
| Type | Motorized Damper |
| Manufacturer Warranty | 1 Year |
| Voltage | 24 V |
| Item Height | 1.5 in |
| Features | Wired |
| Country/Region Of Manufacture | United States |
| Item Width | 1.75 inches |
| Item Weight | 11 ounces |
This motor will work for many round as well as rectangular dampers, as long as it has the number 38398L, 37729L, or 37339L on the side of the motor. Do not order unless you see one of these numbers on your current motor, as there are many motors that look like this from the back side. *Buyer pays return shipping in all cases. *This motor may replace your old motor IF the drive or output shaft is identical to pictures, the 5 digit number ends with the letter 'L" (meaning left hand rotation), and it's 24volts ac. Do not order if the 5 digit number ends in "R", (meaning "right hand rotation", and the motor will not work for you, even if it looks identical. * You must either match the numbers, or visually match the output shaft. Synchron makes hundreds of motors that look the same from the motor side, but are not interchangeable - you must verify the 5 digit number. Thanks! * Can't find the right motor? Check our ebay store damperdirect for our Belimo-powered retrofit kits, that allow the outstanding Belimo (Belimo is the largest maker of commercial damper motors in the world) commercial damper motors to be retrofitted back on to many types of existing dampers with dead motors. This listing is for 1 (one) of the above motors that fit our popular rectangular dampers "HVAC Motorized Zone Control Small (or Large) Rectangular Damper". If you purchased one of these spring return type dampers on ebay from our store damper direct, then this is the motor you need as a replacement. Precise measurements shown are for other dampers that may use this motor, to verify dimensions. This same motor has been used on other types and brands of dampers, including Enerstat, Lennox, Jackson Controls, Robert Shaw, and others. Please do be aware some dampers use similar motors but the shaft dimensions are different, and that is why we include those dimensions here. But, if you are looking for a motor to replace one on a spring return rectangular damper purchased from us, THIS IS the correct motor. For other applications, this motor says on its side "645 24V 60HZ 6W 60RPH 38398L-5-6-46". A yellow label may be attached that says "P/N 78G1001 24VAC .44 amp 60HZ". This motor is designed to operate on 24 volts ac only. If you have any technical questions you may message us through ebay. We have most replacement motors for many brands of dampers, as well as some universal fit replacements. If you do not see what you need, don't hesitate to message us through ebay and we can help you find the part you need! All motors are new inventory, carry a 1 year warranty, and come with full service and support. From damperdirect, where zoning is our only business! We offer the service, support, and technical resources to help you design or service your Zone Control System. We handle all major brands including Durozone, Honeywell, EWC, RetroZone™️, Enerzone Systems Corp., Robertshaw, Invensys, and more. If you don't see it on ebay, please message us through ebay and we can help you get the part you need.