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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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