Schlage S Series 38-018 - Thin Door Extension Ring

The 38-018 is a replacement extension ring for Schlage S Series locks, used on thin doors. It is a trim ring that sits under the lock rose, not a lock or a cylinder, so it does nothing on its own. Order it when you are rebuilding or servicing an S Series lock and need the ring that came with it, and match the finish to the rest of the lock, since these parts are finish specific.

No. The 38-018 ring is an S Series part, and Schlage part rings are cut to the series they belong to. For a B Series deadbolt or an ND Series lever you need the ring listed for that family. Ordering the 38-018 for anything other than an S Series lock gets you a ring that will not seat.

Six finishes: 605 bright brass, 606 satin brass, 612 satin bronze, 613 oil rubbed bronze, 625 bright chrome, and 626 satin chrome. Match the BHMA number stamped or specified on the lock you are servicing rather than matching by eye, because 605 and 625 both read as bright, and 606 and 626 both read as satin, but they are brass and chrome respectively. If your building standard is satin chrome, 626 is the number to order.

Commercial. The 38-018 is a genuine Schlage service part for the S Series commercial line, so it is the right item for an MRO or facilities parts bin where S Series locks are the building standard. Buying it as a stocked spare in your standard finish means a service call does not turn into a lock replacement.