Dorma C501 Single Dummy Trim Keyless Lever Lockset

The C501 is trim only. There is no latch, no chassis function, and no key: it's a fixed lever mounted to the door face so a leaf has a matching pull to the openings around it. Typical spots are the inactive leaf of a pair, a closet or wardrobe door, or a false door where a keeper or roller catch holds it shut. If the door needs to stay closed on its own, you need a latching function instead, not this trim.

No handing to specify. The C501 trim is reversible, so one part number works on a left or right hand door and you can stock a single lever across a building instead of splitting your order.

That's what the C501 is for. It's part of the same C500 Series and comes in the same LC, LG and LR lever designs and the same six finishes as the functioning locks, so a closet or inactive leaf reads identically to the entry doors down the hall. Order the same lever design and finish code you used on the working openings.

No. The C501 tops out at 1-3/4 inches. For a 2 inch leaf you're looking at a different lockset entirely, such as the Cal-Royal CAL20 privacy or CAL30 passage, both listed at 1-3/8 to 2 inches. Measure the door before ordering, because thickness is the one dimension that puts this trim out of range.

A dummy lever such as the Dorma C501 is fixed trim with no latch, so it will not hold a door closed. For an opening that needs to latch but not lock, the Orca Hardware OCL210 is a Grade 2 passage cylindrical lockset, and the Cal-Royal CAL30 is a Grade 1 passage lock from the Calypso series that fits doors 1-3/8 inch to 2 inch thick. The Marks USA 195N is a Grade 1 passage lever in the Survivor series and is listed as ADA compliant. All three operate a latch from either side with no locking; the C501 does not, which is the whole distinction.

The Orca Hardware OCL2170 is the direct counterpart: it is a Grade 2 half dummy lever, the same non-functioning pull trim in the same duty class as the Dorma C501, which is a Grade 2 dummy lever with no keying. Both are lever trim that mount to the door face with no latch and no cylinder, so either one covers an inactive leaf, a closet slab, or a false door where the buyer only needs something to pull on. For a locksmith matching a fleet, the deciding factor between them is lever style and finish rather than function, since the function is identical.

Yes. The Dorma C501 is a dummy lever with no locking function at all, so it cannot secure a restroom or bedroom door. For that opening the Orca Hardware OCL240 is a Grade 2 privacy cylindrical lockset, and the Cal-Royal CAL20 is a Grade 1 extra heavy duty privacy lock in the Calypso series covering doors 1-3/8 inch to 2 inch thick. Both give the inside-thumbturn privacy function a bath or bedroom needs; the C501 is trim only.

The Dorma C501 is non-keyed dummy trim, so any opening that must be secured needs a keyed chassis instead. The Orca Hardware OCL250 is a Grade 2 entrance cylindrical lockset, and the Stanley Security QCL150 is an entrance lever in the QCL100 series, Grade 2, supplied less cylinder with a 2-3/4 inch backset latch and a 4-7/8 inch by 1-1/4 inch ASA strike. For a storeroom function where the lever is always locked outside, the Marks USA 175RF is a Grade 2 storeroom clutched lever prepped for a small format interchangeable core, less core, with a 2-3/4 inch backset and ANSI strike.

The Dorma C501 adjusts for doors 1-3/8 inch to 1-3/4 inch, so a 1-3/8 inch slab is within range. Among comparable cylindrical locks, the Cal-Royal CAL20 and CAL30 also start at 1-3/8 inch and run to 2 inch, and the Lockey E985 and E995 keypad lever locks list 1-3/8 inch to 1-3/4 inch. Locks built for thicker doors will not close down that far: the Alarm Lock DL2700 and DL4100 start at 1-5/8 inch, the Schlage NDEB starts at 1-5/8 inch, and the SDC Electra 7200 and TownSteel FCE-2000 begin at 1-3/4 inch. Confirm the slab before ordering any of the heavier electronic chassis.

Two choices only: lever design (LC, LG or LR) and finish. There's no keyway, no cylinder, no backset and no strike to call out, because the dummy trim has no chassis or latch. That also means no strike prep in the frame, just the through-bolt holes in the door face.

That's the intended use. The C500 Series is aimed at hotels, apartments, churches, municipal buildings, retail complexes, offices and warehouses, and it's rated commercial, not residential. On a closet or a bypass leaf where the door doesn't need to lock or latch, the dummy trim is the correct part and it keeps the lever look consistent with the units' entry hardware.

The Orca Hardware OCL2170 is a Grade 2 half dummy lever, medium duty. It's the closest cross-brand equivalent in function. The reason to stay with the Dorma C501 is appearance matching: if the working doors already carry C500 locks, only the C501 gives you the same LC, LG or LR lever profile on the dummy leaf.

No. The C501 is non-keyed dummy trim with no cylinder to key. If an opening needs to be on the building's master system, order a keyed C500 function instead; the C500 Series offers an optional patented key system, and the dummy trim can still be used on the inactive leaf alongside it.

The Dorma C501 is certified to ANSI/BHMA A156.2 Grade 2. Where a drawing or facility standard calls for Grade 1 lever hardware, the Marks USA 195RAB is a Grade 1 entry clutched lever in the Survivor series supplied less core with an American lever, and the Marks USA 195N is a Grade 1 passage lever in the same series, listed ADA compliant. The Cal-Royal CAL20 and CAL30 are Grade 1 privacy and passage locks respectively, both rated for doors 1-3/8 inch to 2 inch thick. Grade 1 is the higher ANSI cycle and strength class, which is what an institutional standard is usually pointing at.

No, and the word keyless is what trips buyers up. The Dorma C501 is keyless because it has no cylinder and no lock at all - it is fixed dummy trim. Keyless electronic locksets are keyless because a code or credential replaces the key: the Alarm Lock Trilogy T2 DL2700 is a Grade 1 standalone electronic cylindrical lock with a digital keypad, 100 user codes and IC/SFIC compatibility, and the TownSteel XCE-2000 is a Grade 1 heavy duty electronic cylindrical classroom lockset with a keypad for doors 1-3/4 inch to 2 inch thick. Those control access; the C501 does not latch or secure anything.

The Dorma C501 is lever trim, reversible for either hand. Among comparable non-keyed hardware, the Orca Hardware OCL2170 half dummy is a lever, and the Marks USA 195N passage is an American lever listed ADA compliant. The Lockey 1600 and Lockey 2830 are knob locks rather than levers, and the Marks USA 110AB is a round knob entry lockset with a 2-3/8 inch backset. For a property manager standardizing on lever trim across a building, or an owner working to ADA operability, the knob versions are not a like-for-like swap.

They describe the same job from two naming conventions: trim on one side of the door only, with no chassis through the door. The Dorma C501 is a single dummy lever, non-keyed, and the Orca Hardware OCL2170 is a Grade 2 half dummy lever with a medium duty rating. Both mount lever trim to one face for pulling an inactive leaf or a pair door. If a buyer needs trim on both faces, neither single-side part covers it on its own.

Only on an inactive leaf. The Dorma C501 is dummy trim with no latch and no lock, so it cannot secure a classroom. Openings that need lockdown capability call for a classroom-function chassis: the TownSteel FCE-4000 is a Grade 1 heavy duty RFID electronic intruder classroom cylindrical lockset for 1-3/4 inch doors, the TownSteel XCE-9000 is a Grade 1 keypad electronic classroom intruder lockset for doors 1-3/4 inch to 2 inch, and the Schlage XE360M is a Grade 1 wireless tubular lock with a classroom/storeroom function and an offline push button for 1-3/4 inch doors. Use the C501 on the fixed leaf of a pair and one of those on the active leaf.

No. The Stanley Security QCL200 is a keyed cylindrical lock supplied keyed different in an SC keyway with a 118F ANSI 1-1/8 inch by 2-3/4 inch strike, so it bores through the door and carries a cylinder and latch. The Dorma C501 is non-keyed dummy trim with no cylinder and no latch. They share the cylindrical family name and little else. A distributor cross-referencing the two should treat the QCL200 as the keyed answer and the C501 as the inactive-leaf answer.

Six: 605 bright brass, 606 satin brass, 613 oil rubbed bronze, 619 satin nickel, 625 bright chrome and 626 satin chrome. Every one of those is offered in all three lever designs, so finish and lever choice are independent. 626 satin chrome and 630-family satin finishes are the usual commercial default; 613 is the one to pick when the building is on a dark bronze package.