PDQ MR115 PFEF Grade 1 Storeroom Mortise Lock - Heavy Duty Security

The PDQ MR115 PFEF is an architectural-grade, Grade 1 Storeroom Mortise Lock designed for maximum-security applications in high-traffic environments. Featuring the modern and ergonomic PFEF (Philadelphia) lever design in a US26D (Satin Chrome) finish, this lockset is engineered to exceed the rigorous standards of BHMA Series 1000. It is the premier solution for perimeter doors, utility closets, and mechanical rooms where the door must remain locked to the exterior at all times to protect valuable assets and infrastructure.

Built to withstand the most punishing institutional use, the MR Series utilizes a heavy-duty forged brass and stainless steel internal mechanism. This lockset serves as a critical security solution for facility managers who require a "set-and-forget" hardware option that resists prying, torque, and physical abuse. Its high-strength mortise cassette provides a significantly higher level of protection than standard cylindrical locks, making it the industry standard for schools, hospitals, and government offices.

ANSI Function F07: Storeroom Security

The ANSI F07 Storeroom Function is a "fail-secure" mechanical configuration designed for absolute access control on the exterior side of the door.

• Constant Exterior Lock: The exterior lever is always rigid and non-operational. Access from the outside is granted only by key, ensuring that the door can never be inadvertently left in an unlocked or "passage" state.
• Immediate Interior Egress: The interior lever is always active, allowing for immediate, uninhibited egress at all times. This satisfies all life-safety and fire code requirements for emergency exits.
• Positive Deadlocking: When the door is closed, the auxiliary deadlatch engages, preventing "loiding" or shim attacks where a tool is used to retract the latch bolt from the exterior.
• Automatic Re-locking: Because the exterior lever is always fixed, the door is automatically secured the moment it latches shut, eliminating the human error of forgetting to turn a thumbturn or lock a door.

Technical Specifications

High-Performance Solutions for Building Security

The PDQ MR Series Mortise Lock addresses the most demanding commercial infrastructure challenges:

• Maximum Forced Entry Resistance: Unlike cylindrical locks that rely on a single mounting point, the MR115 is housed in a steel cassette that fits deep into the door pocket. This provides superior resistance against "kick-in" attacks and physical tampering.
• Anti-Sag Lever Technology: Lever drooping is a common failure in high-traffic hallways. The PFEF lever is supported by a heavy-duty, independent spring cartridge that ensures the handle returns to a perfectly level horizontal position every time.
• Seamless Retrofit Compatibility: Designed to fit standard ANSI A115.1 mortise preps, this lock is an ideal upgrade for facilities looking to replace aging or failing hardware with a more robust, modern solution.
• Vandal-Resistant Engineering: The trim features a break-away spindle design. If the exterior lever is subjected to extreme torque or a hammer attack, the spindle will break without compromising the internal locking mechanism, keeping the door secured.
• Architectural Integration: The Satin Chrome (US26D) finish provides a clean, professional appearance that matches existing commercial hardware while offering excellent resistance to corrosion and harsh cleaning agents.