TownSteel MSS Series Double Dummy Function - Heavy Duty Sectional Mortise Lock , Non-Keyed

Double dummy means levers on both sides of the door that are fixed and do not turn or operate a latch. The MSS double dummy is non-keyed and has no working latch, so it is pull hardware only, used on inactive leaves of a pair, closet doors, or where you want the look of the MSS mortise trim on a door that does not need to latch. If you need the door to actually latch, you want a passage or office function mortise lock instead.

Yes, handing is a required selection: LH (left hand), RH (right hand), LHR (left hand reverse), or RHR (right hand reverse). Stand outside the door, on the side the key or the push side would be, and note which side the hinges are on and whether the door swings toward or away from you. Getting it right keeps the lever pointing the correct direction on both faces.

That is exactly what it is for. The MSS dummy uses the same sectional escutcheon trim, the same eight lever designs (Artistic, Congr, Gala, Imperial, Quest, Regal, Sentinel, Tango) and the same seven finishes as the rest of the MSS line, so an inactive leaf or closet door reads identically to the working openings. Match the lever style, the finish code and the escutcheon height to what is already hung.

No. A double dummy is trim only, so there is no latch bolt, no guard bolt and no strike in the box. The 3/4 inch anti-friction latch, stainless ANSI strike and 1-1/4 x 8 inch faceplate listed for the MSS Series belong to the latching functions in the family. If your door needs to stay shut, order a latching MSS function or plan on a roller catch or flush bolts for the inactive leaf.

The TownSteel MSS double dummy is a Grade 1 heavy duty non-keyed mortise dummy, meaning it puts fixed lever trim on both faces of the door. When only one face needs trim, the Schlage L0170 is a Grade 1 heavy duty half dummy trim in the L Series with a dummy function, built for 1-3/4 inch doors. Use the MSS when both leaves of a pair or both faces of an inactive door need matching levers, and the L0170 when the opposite face is blank or carries other hardware.

The MSS double dummy is non-keyed with a dummy function, so the levers are fixed and there is no latch operation at all. For an opening that must latch, the Schlage PM010 is a Grade 1 passage latch mortise lock, non-keyed, for 1-3/4 inch doors, and the Falcon MA101 is a Grade 1 heavy duty mortise passage lock in the MA Series with field reversible operation and a fire rating. Both give you a retracting latch with free operation from either side; the MSS gives you trim only.

No. The TownSteel MSS is a heavy duty sectional mortise dummy that mounts to a mortise prep in the door. Dummy trim for an exit device is a different part: the Falcon MESC600DT is a dummy escutcheon lever trim built specifically for M9900 Series exit devices and carries a fire rating. Match the MESC600DT to the exit device chassis, and use the MSS only where the door is prepped for a mortise lock body.

Those are the two sectional escutcheon plate heights offered on the MSS dummy trim. The regular escutcheon measures 10-9/16 x 2-3/8 x 9/32 inches in brass; the low option is the shorter plate. Pick whichever matches the escutcheon already on the other openings in the building so the dummy leaf looks like the rest of the doors. If you are covering an old mortise prep or through-bolt holes, the taller regular plate hides more of the door face.

Seven BHMA finish codes: 605 bright brass, 606 satin brass, 622 matte black, 625 bright chrome, 626 satin chrome, 629 bright stainless steel and 630 satin stainless steel. For satin chrome hardware, order 626. If the rest of the building is satin stainless, 630 is the closer match, and the two are not interchangeable side by side on a pair of doors.

The MSS Series is ANSI Grade 1 heavy duty, commercial rated. On the dummy version there is no latch or cylinder to cycle, so the grade shows up in the trim itself: forged brass or cast zinc levers plated to match the finish, and a brass escutcheon. For a high traffic opening where the inactive leaf gets pulled all day, that matters more than the function code does.

The MSS Series is built to a 2-3/4 inch backset, and the dummy trim is laid out on that same centerline so it lines up with the working MSS locks beside it. Since there is no lock case, you are mounting to the door face rather than filling a pocket, which is why the dummy is the usual answer for retrofitting a leaf that already has an old mortise cut you do not want to repair. Use the TownSteel MSS template to lay out the holes.

Not this one. The MSS double dummy is a mechanical, non-keyed, non-electronic item. The MS motorized mortise line is the one built for stand-alone or integrated access control with optional REX, privacy, door ajar and mechanical key override sensors. If you need a credential reader on the opening, look at an electrified mortise lock, not dummy trim.

Schlage's L0170 is a Grade 1 half dummy mortise lever trim for 1-3/4 inch doors, which covers you when you only need fixed trim on one face rather than both. On the decorative side, Emtek offers dummy mortise entrance sets in the Brisbane (3019), Memphis (3102), Hamilton (3104) and Manhattan (3106) designs. The MSS stays the pick when the rest of the building is TownSteel MSS and you want the trim to match exactly.

Stay mechanical and pick a latching function. Schlage's PM010 is a Grade 1 non-keyed passage latch mortise lock for 1-3/4 inch doors, and Falcon's MA101 is a Grade 1 heavy duty mortise passage lock that is field reversible and fire rated. Hager's 3810E is a Grade 1 passage mortise lock with escutcheon trim on a 2-3/4 inch backset, matching the MSS backset, for doors 1-3/4 to 2-1/2 inches thick.

They serve the same dummy purpose from a different design direction. The Emtek 3019 Brisbane, 3102 Memphis, 3104 Hamilton and 3106 Manhattan are all mortise entrance locksets in dummy function, each a distinct decorative series. The TownSteel MSS is a Grade 1 heavy duty commercial sectional mortise dummy offered across eight lever styles including Artistic, Imperial, Regal and Tango, with finishes from 605 Bright Brass through 630 Satin Stainless Steel. Choose the Emtek lines when the opening is matching a residential decorative suite and the MSS when it must match commercial Grade 1 trim elsewhere in the building.

Yes. The MSS is non-keyed but also non-locking, since it is a dummy. The Hager 3850E is a Grade 1 office mortise lock with lever and escutcheon, non-keyed, on a 2-3/4 inch backset for doors 1-3/4 to 2-1/2 inches - the same backset the MSS uses. The Cal-Royal NM8050 is a Grade 1 heavy duty office/entrance mortise lockset with auxiliary deadlatch for 1-3/4 inch doors. Both give office-function control the dummy trim cannot.

The MSS is a Grade 1 heavy duty mortise dummy with a 2-3/4 inch backset and an ANSI strike prep, so the active leaf can take any Grade 1 mortise lock cut to the same prep. Common pairings include the Accentra 8805FL Grade 1 storeroom mortise lock in the 8800 Series, the Cal-Royal NM8080 Grade 1 storeroom mortise lockset with an interchangeable core option, and the Corbin Russwin ML2003 Grade 1 classroom mortise lockset in the ML2000 Series for 1-3/4 inch doors. Pick the active-leaf function by how the room is used, then match lever style and finish to the MSS.

Only if the door prep changes. The TownSteel MSS is a mortise lock requiring a mortise pocket in the door edge. The Schlage PC10 is a Grade 1 passage cylindrical lock, non-keyed with a rose, for 1-3/4 inch doors, and it takes a bored cylindrical prep instead. On an existing mortise-prepped door the PC10 is not a drop-in; on new doors it is a different prep decision entirely.

The MSS double dummy is a mechanical, non-electronic dummy and does nothing on a controlled opening beyond providing matching levers on the non-secure face. For the controlled leaf, the Command Access ML190 is a heavy-duty motorized mortise lock with field selectable EL/EU operation on 24VDC in storeroom function, and the BEST 45HW is a heavy duty wired electromechanical mortise lock running 12V or 24V. The MSS can still be specified on inactive leaves so the lever style matches the electrified opening.

Eight lever styles: Artistic, Congr, Gala, Imperial, Quest, Regal, Sentinel and Tango. All are forged brass or cast zinc, plated to match the finish symbol you order. Specify the same style on the dummy as on the latching locks around it, since lever shape is the difference a tenant notices before finish.

The MSS double dummy is a complete non-keyed trim assembly with levers and escutcheons on both faces and no working latch. The BEST 45H is a heavy duty mortise lock body in the 45H series with public entrance function and field reversible operation, and the 45HCA is a heavy duty lock body with intruder function - those are chassis you combine with separate trim. Order the MSS when you need finished dummy trim ready to mount, and a lock body when you are replacing only the internals behind trim already on the door.