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PDQ MR114 MFSF Hold Back Double Cylinder Function Mortise Lockset - Grade 1
The PDQ MR114 MIA (often ordered as MFSF for the Miami lever on an F-Series Sectional (round rose, wrought trim)) is a premier Grade 1 Hold Back Double Cylinder Function Mortise Lockset engineered for demanding commercial environments. While typical commercial locks are rated for one million cycles, the PDQ MR Series is tested to over 11 million cycles -- extending the hardware lifespan by 11 times the industry standard. This lockset provides a hold-back feature controlled from both sides, where a key can secure the latchbolt in the retracted position for controlled hold-open.
Constructed with a heavy-duty 12-gauge cold rolled steel mechanism, the MR114 provides a formidable defense against unauthorized entry. The Miami (MIA) lever offers a clean, architectural aesthetic in a US26D Satin Chrome finish. Its "return-to-door" design is not only ADA compliant but also serves as a safety solution by preventing clothing, bags, or straps from snagging on the hardware in busy corridors.
Function: Hold Back Double Cylinder
The Hold Back Double Cylinder function operates the latchbolt from the inside lever, admits entry by key from the outside, and lets a key from the inside hold the latchbolt retracted:
- Latchbolt operated by lever from inside.
- Key outside retracts latchbolt.
- Rigid outside lever.
- Auxiliary latch deadlocks latchbolt.
- Key inside secures latchbolt when latchbolt is retracted by inside lever.
- Not field reversible.
- Specify handing.
Technical Specifications
| Feature | Details |
| Model | PDQ MR114 MIA (F-Series Sectional) |
| ANSI Function | -- (Hold Back Double Cylinder; no ANSI code) |
| Performance | 11 Million+ Cycles (11x Grade 1 Standard) |
| Chassis Case | 12-Gauge Cold Rolled Steel (Dichromated) |
| Lever Style | Miami (MIA) - Forged Brass Base |
| Latchbolt | 3/4" Throw Stainless Steel, Anti-friction |
| Handing | Not Field Reversible -- specify LH (LHR) or RH (RHR) when ordering |
| Certifications | UL10C 3-Hour Fire Rated; HVHZ Hurricane Approved |
| Warranty | Lifetime Limited Warranty |
Engineered Solutions for Commercial Security
The PDQ MR Series addresses the specific technical and safety challenges of modern facilities:
- Vandal-Resistant Spindle: The "weakened spindle" design is a critical security solution. If the exterior lever is subjected to extreme torque or a hammer attack, the spindle breaks cleanly to prevent damage to the internal 12-gauge steel case, keeping the lock secure.
- Extreme Weather Durability: Certified for High Velocity Hurricane Zones (HVHZ) with a design load rating of +/- 70.0 PSF, this lockset provides the structural integrity necessary for coastal buildings.
- Anti-Sag Lever Technology: The MR Series utilizes independent, high-tension spring cartridges to ensure the Miami lever remains perfectly level throughout its multi-million cycle life.
- Simplified Key Management: Provided with a Schlage C (SCC) compatible cylinder, the MR114 integrates easily into existing master key systems. It also supports Interchangeable Core (IC) options for rapid re-keying.
- Fire Safety Compliance: With a UL 3-hour fire rating, this lockset ensures that commercial doors remain a reliable fire and smoke barrier, protecting occupants and property.
Handing: This mortise lockset is Not Field Reversible. 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 | 626 - US26D Satin Chrome or 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 |
| Door Handing | LH or RH |
| Brand | PDQ |
| ANSI Mortise Lock Function | Hold Back Double Cylinder |
| Trim Design | MFSF |
| 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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