Marks Hardware 7B/3LH Entry Mortise Body Only is a robust and reliable solution for your security needs. Designed with a 2-3/4" backset, this Grade 2 mortise lock offers a combination of durability and performance that is ideal for both high-traffic and residential environments. Engineered by Marks USA, a trusted name in mortise locks for over three decades, the 7B/3LH features a cast alloy bolt with a full 1" throw for enhanced security, while its anti-friction latch throw measures 5/8". The high-pressure cast zamac case ensures longevity, complemented by a baked enamel finish that resists wear and tear. The front measures 1-1/4" x 8", allowing for versatile installation options. This model meets ANSI grade 1 specifications and holds a 3-hour fire rating from Underwriters Laboratories, ensuring it stands up to rigorous safety standards. Moreover, the mortise lock comes with a lifetime mechanical warranty, promising maintenance-free performance for years to come. Available in a bright brass finish, the 7B/3LH not only enhances security but also adds a touch of elegance to your property. Whether for entrance or dormitory applications, this mortise lock is a dependable choice for demanding security requirements.

Entry Mortise Body Only, 2-3/4in Backset, Deadbolt and Latch, Front 1-1/4 x 8in, Grade 2, 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: 2-3/4"
• Bolt throw: Cast alloy full 1" throw
• Latch throw: 5/8" (anti-friction)
• Case: High pressure cast zamac, baked enamel finish
• Front: 1-1/4" x 8", Flat or 3° bevel
• Hubs: 9/32" on square steel, w/security separator

Keyed Single Cylinder, No Deadbolt Functions:

• D: Office/vestibule
• DW: Vestibule

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

Keyed Double Cylinder, with Deadbolt Functions:

• AC: Entrance, ANSI F35
• C: Storeroom, ANSI F14
• FA: Dormitory, ANSI F11
• FX: Dormitory, ANSI F33

Keyless Functions:

• N: Passage, ANSI F01
• L: Bathroom, ANSI F02
• LF: Privacy, ANSI F19

Finishes:

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