LiftMaster Interlock Switch Kit N4 | LIF-K74-19987-N 20-3075C-4 motor New Part Number: FMWBW_ML (Old

New Part Number: FMWBW_ML (Old Part Number: FMWBW-ML)

| HYS-MX2228-14

The P120009 control board provides precise power distribution and signal coordination

Also works for 8′ x 10′

Very low operating costs thanks to efficient and durable MHTM™ drive

LiftMaster Interlock Switch Kit N4 | LIF-K74-19987-N 20-3075C-4 motor New Part Number: FMWBW_ML (OldLiftMaster Interlock Switch Kit N4 LIF K74 19987 N This is a replacement Interlock Switch Kit, N4. Compatible with LiftMaster Model J Commercial Door Operators; manufactured after 2005. Check the manual or replacement parts diagram for specific part information before ordering to ensure compatibility. Genuine LiftMaster replacement part.