Schlage Commercial 09-509 L583-363 Large ADA Thumbturn, L Series Rose Trim, 1-3/8" to 1-7/8" Thick Doors

No. The 09-509 L583-363 is the thumbturn built for L Series rose trim, so it mates with L Series mortise locks trimmed with roses. An L Series opening running escutcheon trim takes the turn made for that trim instead. Look at the door before you order: roses are the small round plates behind the lever, escutcheons are the long plates that run most of the height of the lock.

Yes. The 09-509 L583-363 thumbturn covers doors 1-3/8 to 1-7/8 inches thick, which takes in the 1-3/4 inch thickness standard on commercial openings and the 1-3/8 inch thickness common on older interior doors. A door thicker than 1-7/8 inches is outside the range this part is built for.

Order the large turn, model 09-509 L583-363. Accessible operating hardware turns on whether a person can work it without tight grasping, pinching, or twisting of the wrist, which is why the large turn gets specified in place of a small knurled one. It goes on L Series rose trim, on doors 1-3/8 to 1-7/8 inches thick.

No. The 09-509 L583-363 is sold as a replacement part, so the thumbturn goes back onto the L Series rose trim already on the door and the mortise case, lever trim, and cylinder stay where they are. Get the finish right and confirm the door falls inside 1-3/8 to 1-7/8 inches thick and the repair is a parts swap rather than a lock change.

Eleven finishes: 605 bright brass, 606 satin brass, 612 satin bronze, 613 oil rubbed bronze, 619 satin nickel, 622 matte black, 625 bright chrome, 626 satin chrome, 629 bright stainless steel, 630 satin stainless steel, and 643E aged bronze. Match by the BHMA number on the trim you already have rather than by the finish name, since satin chrome, satin nickel and satin stainless read close to each other on a wall but do not blend once they are side by side on the same door.

Stainless steel is the substrate on the 09-509 L583-363, and if you want the base metal carried through rather than a plated look, 630 satin stainless and 629 bright stainless are two of the finish choices. On an opening that gets turned hundreds of times a day, the turn is usually the piece that wears out first, which is why it is stocked as a replacement part on its own.

No. The 09-509 L583-363 is a commercial part matched to Schlage L Series mortise locks with rose trim. Residential deadbolts and residential grade locksets use their own turn pieces and do not take L Series parts. If the door has a mortise lock body with a rose behind the lever, you are in the right family.

It describes how the turn is built across the 1-3/8 to 1-7/8 inch door thickness range it covers, with the extension taken equally on both faces of the door rather than all on one side, so the parts sit symmetrically. It is not an option you add to the order. Finish is the only selection you make.