The LiftMaster 19-5816 #48 Chain Assembly for a 16' door is an OEM replacement part engineered for chain-driven, trolley-style LiftMaster commercial door operators that specify #48 chain. Matched to a 16-foot door height, it restores proper drive engagement and travel for sectional overhead doors commonly found in commercial and industrial applications. Use it to replace a worn, stretched, or damaged chain and maintain smooth, dependable operation on compatible LiftMaster systems.
Before ordering, confirm your operator’s manual calls for a #48 chain assembly and a 16' door height to ensure compatibility. Installation should follow LiftMaster’s service procedures: disconnect power, secure the door, install and tension the chain correctly along the trolley rail, then verify door balance and recheck or reset open/close limits as needed. Lubrication and periodic inspection should be performed per the operator’s maintenance schedule. This genuine LiftMaster replacement chain assembly supports reliable performance for commercial overhead sectional doors where a #48 chain is specified.