Latch bolt operated by lever from either side axcept when outside lever is locked from outside by key. When outside lever is locked, latch bolt retracted by key, or by operating key and outside lever fromoutside or byoperatinginside lever. Auxiliary dead latch. Mortise Entry Lock Set DDAL04 F04 delivers high-security performance for office entry doors requiring ANSI Grade 1 reliability. Engineered with a full stainless steel structure, this lock set ensures consistent durability under high-frequency commercial use. The integrated auxiliary dead latch enhances protection against forced entry, meeting strict safety expectations in commercial environments. With UL fire-rated certification, the lock maintains structural integrity under fire conditions, making it suitable for projects where compliance and safety are critical. Precision machining and standardized dimensions allow easy integration into American standard door systems, supporting both left-hand and right-hand installations. From daily office access control to high-traffic commercial buildings, this mortise entry lock set ensures reliable performance, consistent quality, and long-term stability required by professional door hardware applications.

Latch bolt operated by lever from either side except when outside lever is locked from outside by key. When outside lever is locked, latch bolt retracted by key, or by operating key and outside lever from outside or by operating inside lever. Auxiliary dead latch. The Commercial Mortise Lock delivers a high level of security and durability for demanding door applications where safety, compliance, and long-term performance are essential. Engineered to meet ANSI/BHMA A156.13-2005 Grade 1 standards and certified with UL fire rating, this lockset supports reliable operation in commercial environments such as office buildings, public facilities, and large-scale projects. The internal lockcase uses heavy gauge stainless steel to ensure strong resistance against corrosion and repeated use, maintaining stable functionality over time. With compatibility for both left-hand and right-hand doors and a standard fit for door thickness ranging from 45mm to 55mm, this lockset supports flexible installation across various commercial door systems. Precision manufacturing ensures accurate alignment, reducing installation errors and improving overall efficiency in project deployment.

Latch bolt operated by key from outside or by operating inside lever. Outside lever is always inoperative. Auxiliary dead latch. The Classroom Mortise Lock DDAL07 F07 delivers reliable security performance for controlled-access interior spaces such as storerooms and closets. Manufactured with solid SUS304 stainless steel components, this lock ensures long-term resistance against corrosion, wear, and intensive daily use in commercial environments. Certified to ANSI/BHMA A156.13-2005 Grade 1 and UL fire-rated standards, it meets strict safety and durability requirements for institutional and public building projects. With a heavy-gauge stainless steel lockcase, precision casting bolts, and flexible finishing options including SSS, PSS, PVD, and antique tones, this model fits a wide range of architectural styles and project specifications. Suitable for wood doors, metal doors, and fire-rated doors, it supports both left-hand and right-hand installations, offering dependable performance for commercial-grade applications and bulk project requirements.

Latch bolt operated by lever from either side. Dead bolt projected by key from outside and thumb turn from inside.Operating inside retracts both bolts and unlocks outside. The Front Door Mortise Lock Set DDAL13 F13 delivers commercial-grade security performance for high-traffic entrances where durability, fire safety, and long-term stability are critical. Certified to ANSI/BHMA A156.13-2005 Grade 1 and UL fire-rated standards, this lockset meets the strict requirements commonly specified in public buildings, residential complexes, and institutional projects. A heavy-gauge stainless steel lockcase enhances structural strength and corrosion resistance, supporting reliable operation under intensive daily use. All visible components, including the forend and strike, use Grade 304 stainless steel to maintain consistent performance across wood doors, metal doors, and fire-rated doors. Flexible door handing compatibility and a reversible latchbolt simplify installation across different project requirements.