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PDQ MR113 LJSJ Grade 1 Hold Back Single Cylinder Mortise Lock - Keyed Hold-Back Security (Handed)
The PDQ MR113 LJSJ is an architectural-grade, Grade 1 Hold Back Single Cylinder Mortise Lock for demanding, high-traffic commercial and institutional openings. It pairs the Los Angeles (LJ) lever -- a straight, angular lever with a beveled end -- on a J-Series Sectional (round rose) in a US32D (630) Satin Stainless finish, and is engineered to exceed the rigorous standards of BHMA Series 1000. It suits corridor, stairwell, and service openings where the outside lever stays rigid, entry is by key from the outside or by lever from the inside, and the latch can be held retracted for controlled free passage. This is a handed function and is not field reversible. Its "return-to-door" design is ADA compliant and helps prevent clothing, bags, or straps from snagging on the hardware in busy corridors.
Built to withstand punishing institutional use, the MR Series drives a 3/4" throw anti-friction stainless steel latchbolt with an auxiliary deadlatch from a heavy-gauge steel case seated deep in the door pocket -- providing significantly higher forced-entry protection than standard cylindrical locks, the industry standard for schools, hospitals, and government offices.
ANSI Function F06: Hold Back Single Cylinder
The ANSI F06 Hold Back (Single Cylinder) Function keeps the outside lever rigid, retracts the latchbolt with an outside key, and lets the outside key hold the latchbolt back when the inside lever retracts it:
- Latchbolt operated by lever from inside.
- Key outside retracts latchbolt.
- Rigid outside lever.
- Auxiliary latch deadlocks latchbolt.
- Key outside secures latchbolt when latchbolt is retracted by inside lever.
- Not field reversible.
- Specify handing.
Technical Specifications
| Feature | Details |
| Model | PDQ MR113 LJSJ (J-Series Sectional (round rose)) |
| ANSI Function | F06 (Hold Back Single Cylinder) |
| ANSI/BHMA Grade | Grade 1 (Exceeds 1,000,000 Cycles) |
| Lever Design | Los Angeles (LJ) |
| Trim / Mounting | J-Series Sectional (round rose) (round rose) |
| Base Finish | US32D (630) Satin Stainless -- 626 not offered (J-Series) |
| Chassis | Heavy Gauge Steel, Zinc Dichromate Plated |
| Latch Bolt | 3/4" Throw, Stainless Steel, Anti-Friction |
| Cylinder | Schlage C (SCC) Keyway; Interchangeable Core (IC) options |
| Door Thickness | 1-3/4" Standard |
| Handing | Not Field Reversible -- specify LH (LHR) or RH (RHR) when ordering |
| Warranty | Lifetime Limited Warranty |
High-Performance Solutions for Building Security
The PDQ MR Series Mortise Lock addresses the most demanding commercial infrastructure challenges:
- Maximum Forced Entry Resistance: The steel case fits deep into the door pocket, providing superior resistance against "kick-in" attacks and physical tampering versus single-point cylindrical locks.
- Positive Deadlatching: The auxiliary deadlatch engages when the door closes, deadlocking the latchbolt against "loiding" or shim attacks against the bolt.
- Simplified Key Management: Provided with a Schlage C (SCC) compatible cylinder, the MR113 integrates easily into existing master key systems and supports Interchangeable Core (IC) for rapid re-keying.
- Anti-Sag Lever Technology: The Los Angeles lever is supported by an independent, high-tension spring cartridge that returns the handle to a level horizontal position every time.
- Vandal-Resistant Engineering: The trim features a break-away spindle design; extreme torque or a hammer attack breaks the spindle without compromising the internal locking mechanism.
- Architectural Integration: The Satin Stainless (US32D) base finish offers a clean, professional appearance and excellent corrosion resistance; premium finishes (605, 606, 612, 613E, 622, 629) are also available.
Finish availability: This J-Series lockset is offered in 630 (US32D Satin Stainless) as the base finish, plus premium architectural finishes 605, 606, 612, 613E, 622, 629. It is not offered in 626 (626 is an F-Series finish).
Handing: This is a handed function and is Not Field Reversible. The lock is built to a specific door hand at the factory. Specify the door hand when ordering -- LH (LHR) or RH (RHR). Refer to the diagram above to determine the hand of your door.
| Finish with BHMA code | 630 - US32D Satin Stainless or 613E - US10BE Oil Rubbed Bronze Equal or 605 - US3 Polish Brass or 606 - US4 Satin Brass or 612 - US10 Satin Bronze or 622 - US19 Flat Black or 629 - US32 Polish Stainless |
| Rose / Escutcheon Style | Round Rose - SJ or Square Rose - SR |
| Door Handing | LH or RH |
| Brand | PDQ |
| ANSI Mortise Lock Function | F06 - Holdback |
| Trim Design | LJSJ |
| Series | PDQ - MR Series |
| Strike Type | 4-7/8 ANSI Strike - Hollow Metal Frames |
| Standard Cylinders and Keyways | Schlage C Keyway |
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