LiftMaster Field Mod. Dual Aux. Limit Switch
LiftMaster Auxiliary Relay Option Board
LiftMaster Timer Kit for TS Wiring
LiftMaster Bi-Parting Mod Kit 12ft (Includes 19-5118 Chain #41 for 18ft Door and 10-5816-P Track for 16ft Door
LiftMaster Slip Clutch Option Mega Arm
LiftMaster Manual Hoist Mod. M8 #41 Chain for 14ft High Door
LiftMaster Bi-Parting Mod Kit 16ft (Includes 19-5124 Chain #41 for 24ft Door and 10-5820-P Track for 20ft Door ***Actual length 275"***
LiftMaster Single Button Control Mod. Field Kit Mod. Logic
LiftMaster Auxiliary Limit Switch Mod M62 Open Factory Installed
LiftMaster Non-Resettable Counter Field Kit
LiftMaster Parking Gate Radio Mod. Kit
LiftMaster Dual Aux Trolley Mod. M15 #41 Chain for 12ft High Door
LiftMaster Manual Hoist Mod. M8 #41 Chain for 12ft High Door
LiftMaster Timer-to-Close Factory or Field Install
LiftMaster Manual Hoist Mod. Kit #48 Chain Drive
LiftMaster Manual Hoist Mod. M8 #41 Chain for 16ft High Door
LiftMaster Dual Trolley Mod. #41 Chain for 16ft High Door Includes (2) 16' (Actual length 227") tracks and (1) Round Bar 240"