Schlage Commercial 09-666 L Mortise Lock Armor Front

No. The 09-666 is cut latch x auxiliary latch x deadbolt, so it carries a deadbolt opening that a latch-only mortise case has nothing to fill. On a function without a deadbolt you would be looking at an open slot in the door edge. Order the armor front machined for the function you actually have; the 09-666 covers the L9453, L9480, L9485 and L9486.

Not if the case itself still works. The 09-666 is the armor front alone, the finished plate that sits in the edge of the door over the mortise case, and it is sold as a replacement part. Pull the old front, drop the new one on in the finish you need, and the lock body, cylinder and trim all stay put. It only works out that way if your lock is one of the functions the 09-666 is cut for: L9453, L9480, L9485 or L9486.

Twelve finishes, ordered by the standard finish numbers Schlage uses across the L Series trim, so you match the front to the lever by number rather than by eye: 605 bright brass, 606 satin brass, 609 antique brass, 612 satin bronze, 613 oil rubbed bronze, 619 satin nickel, 622 matte black, 625 bright chrome, 626 satin chrome, 629 bright stainless, 630 satin stainless and 643E aged bronze. Most commercial openings are running 626 or 630, and those are the two to check first on an existing building.

No, the same front carries both. The Schlage 09-666 covers the L9453, L9480, L9485 and L9486, because all four use the latch, auxiliary latch and deadbolt cutout pattern. Swapping between those functions is a case and trim change, not a door-edge re-prep.

One part number covers a lot of ground here. The 09-666 serves L9453, L9480, L9485 and L9486 openings, so a facility standardized on those functions can keep a single armor front on the shelf instead of one per function. Stock it in whichever finish the building runs, since the finish is the only variable on the part, and it is a Schlage commercial L Series item rather than a residential one.

Commercial only. The 09-666 is a Schlage commercial mortise lock part, made for the L Series case, and the functions it fits are the L9453, L9480, L9485 and L9486. A residential Schlage lock is a different prep entirely and does not take a mortise armor front.

The armor front is the visible metal plate on the edge of the door that screws over the mortise lock case, with the openings the latchbolt, auxiliary latch and deadbolt pass through. It is what takes the abuse from the strike and the frame, and it is the finished surface anyone sees when the door is open. The 09-666 is Schlage's front for the L Series cases with that latch, auxiliary latch and deadbolt combination, sold on its own as a replacement in twelve finishes.