Marks Hardware 5J/3LH-B4 Classroom Mortise Body Only offers a robust and reliable solution for secure access control in educational environments. Designed specifically for lever sets, this mortise lock features a 2-3/4 inch backset, ensuring compatibility with a wide range of door applications. The latch-only configuration eliminates the need for a deadbolt, making it an ideal choice for classroom settings where safety and ease of use are paramount. Constructed to meet ANSI Grade 1 specifications, this mortise lock is built for durability and longevity, capable of withstanding high traffic and abuse. The stainless steel bolt provides a full 1-inch throw, while the anti-friction latch features a 3/4-inch throw for smooth operation. The front measures 1-1/4 x 8 inches and comes with an adjustable bevel for versatile installation options. The Marks Hardware 5J/3LH-B4 is backed by a lifetime mechanical warranty and BHMA certification, offering peace of mind for building professionals and knowledgeable homeowners alike. With a fire rating from Underwriters Laboratories, this lock is engineered for safety and reliability. Available in a bright brass finish, it adds an elegant touch to any door while ensuring uncompromised security. Choose Marks Hardware for a high-performance lock that combines functionality with aesthetic appeal.

Classroom Mortise Body Only, for Lever Sets, 2-3/4in Backset, Latch Only, No Deadbolt, Front 1-1/4 x 8in, Grade 1, 605/US3 Bright Brass

Marks USA has been making mortise locks for over 30 years. From their introduction, our mortise locks have enjoyed a reputation for long life and their ability to excel in high traffic, high abuse areas. Marks USA mortise locks are engineered to provide years of maintenance-free performance. Our Nova series mortise locks exceed 6 million cycles of continuous use.

Features:

• Meets ANSI grade 1 specification: ANSI-A156.13
• Underwriters laboratories 3-hour fire rating
• BHMA Certified
• Lifetime mechanical warranty
• Available in 2-1/2" and 2-3/4" backset
• Stainless steel bolts, latches, independent lever support springs (on lever sets)

Specifications:

• Backset: 5 Series 2-3/4"; 55 series 2-1/2"
• Bolt throw: Stainless steel full 1" throw
• Latch throw: 3/4" (anti-friction)
• Auxiliary latch: 1/2" throw
• Case: Stamped steel 090 thick, zinc dichromate finish
• Front: 1-1/4" x 8", adjustable bevel
• Hubs: Steel, 9/32" on diamond 5/16" on square w/security separator

Keyed Single Cylinder, No Deadbolt Functions:

• D: Office/vestibule
• DW: Vestibule
• E/Q/QH/K: Office, ANSI F04
• EW: Storeroom, ANSI F07
• J: Classroom, ANSI F05
• JM/JR: Hospital (holdback), ANSI F06
• GL: Inst. privacy, ANSI F26
• MT: ArchiTech
• EL: Electrically locked
• EU: Electrically unlocked

Keyed Single Cylinder, with Deadbolt Functions:

• A: Entrance, ANSI F08, F10
• B: Entrance, ANSI F21
• F: Dormitory, ANSI F12
• FS: Dormitory
• FW: Dormitory, ANSI F13
• FD: Apartment, ANSI F20
• H: Hotel, ANSI F15
• LH: Spec. privacy

Keyed Double Cylinder, No Deadbolt Functions:

• G: Entrance, ANSI F09
• GC: Intruder latchbolt, ANSI F32
• GG: Classroom security
• GR: Classroom security w/holdback
• WW: Institution, ANSI F30

Keyed Double Cylinder, with Deadbolt Functions:

• AC: Entrance, ANSI F35
• C: Storeroom, ANSI F14
• FC: Intruder deadbolt, ANSI F34
• FA: Dormitory, ANSI F11
• FX: Dormitory, ANSI F33

Keyless Functions:

• N: Passage
• L: Bathroom, ANSI F02
• LF/LJ: Privacy, ANSI F19
• EX: Exit, ANSI F31

Finishes:

• 3 - Bright brass
• 32D - Stainless steel
• 10B - Dark bronze
• 26D - Satin chrome