LIFTMASTER Garage Door Openers 41A3489 Complete Trolley Assembly Compatible with LiftMaster and Chamberlain Brand garage door openers 1984 thru current. Compatible with LiftMaster Chamberlain chain drive garage door opener models 1040, 1045, 1046, 1050, 1055, 1056, 1060, 100WD, 200WD, 300 WD, 1140, 1145, 1146, 1150, 1155, 1156, 1160, 110WD 210WD, 310WD, 1240, 1245, 1246, 1250, 1255, 1256, 1260, 1260LK, 1245LK, 215WD, 220ED, 315WD, 320WD, 1240R, 1245R, 1246R, 1255R, 1256R, 1265, 985, 2265, 2565, 2245, 2255, 2575, 2595, 140, 150, 240, 350, 450, 550, 700WHC, 701WHC, 1000, 2000, 4000, 4001, 5000, 710WHC, 711WHC, 1100, 2100, 4100, 5100, 7200, 1200, 2200, 4200, 6200, 7220, CG40, PD210, PD610, PD612K, 7420, PD752, PD758S all models may not be listed.