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Technical
- Liftmaster/Sears/Craftsmen garage door opener carriage rack for screw drive operators. Works with sears
- 139.53992 and many others
- Works in with carriage trolley part number 41C4677.
- Also consider using Lubriplate lubricant after installing this part to prolong life and have a smooth running garage door opener.
- Compatible with Liftmaster Models
- 1000SD, 1000SDR, 2000SD, 2000SDR, 2110, 2220, 3110, 3220
- Compatible with Chamberlain Models
- 4600, 4640, 9902, PP420, PP460-2, 9950, 9960, 7902, 9950D, PD420D, PD422D, PD462D
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