LiftMaster Interlock Switch Kit N4 | LIF-K74-19987-N 20-3075C-4 motor Also works for 8′ x

Also works for 8′ x 10′

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

The P120009 control board provides precise power distribution and signal coordination

Silver Color

the system can be quickly reset without the need for major repairs

LiftMaster Interlock Switch Kit N4 | LIF-K74-19987-N 20-3075C-4 motor Also works for 8′ xLiftMaster 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.