LiftMaster Chain Tensioner, 1" | LIF-71-6023 LIFT-29-40376 the L979U makes garage entry

the L979U makes garage entry simple and secure

Unrivaled Performance

Model Number: CB12956

Compact & Efficient – Streamlines detector replacement and upgrades without rewiring or extra hardware

Client: EZStation/EZView/EZLive

LiftMaster Chain Tensioner, 1" | LIF-71-6023 LIFT-29-40376 the L979U makes garage entryLiftMaster Chain Tensioner, 1" LIF 71 6023 Chain Tensioner Kit for H, J and HJ Commercial Door Operators. Maintain the correct amount of tension in the chain of your commercial door operator with this part. Made for 1 Shafts, it will apply tension to the drive chain between the operator and the shaft of the door. Genuine LiftMaster replacement part.