Garage door openers that use an operator rail turn a chain or belt. This piece connects to a trolley, which is also called a carriage. The trolley pulls the opener arm to lift the garage door, and pushes the arm to close the door.
A piece of rope typically hangs down from the trolley. This is used to disengage and reengage the opener. When the opener is disengaged, pressing the wall button or the button on your remote will run the opener and turn the belt or chain. It will not, however, open or closed your door.
You can sort the trolleys by manufacturer, or you can browse other garage door parts using the links below.
|OTL-TR||41A3489 Chamberlain LiftMaster Trolley Assembly for
T-Rail Chain Drive Operators
|OTL-SD||41C467 Chamberlain LiftMaster Trolley Assembly for
|OTL-3R||41A626 Chamberlain LiftMaster Trolley Assembly for
|OTL-SQ||41C514 Chamberlain LiftMaster Trolley Assembly for
|OTL-BD||41B386 Chamberlain LiftMaster Trolley Assembly for
Belt Drive Operators
|OTL-TSCOM||Chamberlain LiftMaster Commercial Track Spacer Kit||EA||$22.80||4||$21.09||8||$19.38||16||$18.81|
|OTG-SGM||36179R Genie Screw Drive Carriage (with Magnet)||EA||$35.84||2||$33.15||4||$30.46||8||$26.88|
|OTG-TR||36254R Genie Carriage Assembly for T-Rail Openers||EA||$23.25||2||$20.93||4||$19.38||8||$17.05|
|OTG-CR||20462R Genie Carriage Release Assembly||EA||$30.33||2||$27.30||4||$25.28||8||$22.24|
|OTG-CS||27175B Genie Carriage Slide (Used on OTG-CR)||EA||$9.27||2||$8.34||4||$7.73||8||$6.80|
|OFIALM-COM||75-10174 Chamberlain LiftMaster Front Idler Assembly||EA||$47.43||2||$42.69||4||$37.94||8||$31.62|
UN: Units by which each part is sold
Price: Cost per unit (for smaller quantities)
Qty | Price: When purchasing at least the quantity in the left column, the unit price is specied in the Price column to the right