Lockwood 3770MkII Nightlatch Primary Lock 60mm Backset Satin Stainless Steel

LOCKWOOSKU: LW3770SS
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Price:
$179

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The Lockwood 3770MkII Nightlatch Mortice Lock is designed for heavy-duty commercial and industrial applications, making it ideal for use in offices, schools, hospitals, hotels, clubs, and other high-traffic buildings.

This mortice lock features a key-operated function from the outside and a turn knob or key operation from the inside, providing both security and ease of use. The nightlatch function automatically engages when the door closes, ensuring reliable locking without manual operation.

Engineered for durability, the lock includes through-fixing capability for rose furniture, turn knobs, and escutcheons, offering enhanced strength and a more secure installation for door hardware.

Specifications:

  • Model Number: 3770SS

  • EAN: 9340116014548

  • Fire Rating: Up to 4 hours

  • Cylinder Type: 570

  • Suitable For Residential Use: Yes

  • Standards: Tested to Australian Standards

  • Bolt / Latch Projection: 15mm

  • Bolt Holdback: No

  • Handing: Reversible

  • Bolt Type / Function: Nightlatch

  • Bolt Material: Stainless Steel

  • Number of Cylinders: 2

  • Backset: 60mm

  • Body / Case Material: Zinc

  • Restricted Keying Compatible: Yes

  • Door Thickness Range: 32–50mm

  • Warranty: Lockwood 25-Year Mechanical Guarantee

  • Approved Ratings: Security S7, Corrosion C6, Durability D8


 

Frequently Asked Questions
Q: What type of doors is the Lockwood 3770MkII suitable for?
A: This lock is suitable for both commercial and residential doors, including offices, schools, hospitals, hotels, and other high-traffic entry points.

Q: What is the backset of this lock?
A: The lock has a 60mm backset, which suits standard door preparations.

Q: Does this lock automatically lock when the door closes?
A: Yes, the nightlatch function automatically engages when the door closes.

Q: Is this lock suitable for fire-rated doors?
A: Yes, it is fire-rated for up to 4 hours and is suitable for compliant fire door installations.

Q: Can this lock be used on both left and right-handed doors?
A: Yes, the lock is reversible and can be installed on both left-hand and right-hand doors.

Q: What door thickness does this lock support?
A: It is suitable for doors with a thickness range of 32mm to 50mm.

Q: Is restricted keying available with this lock?
A: Yes, the lock is compatible with restricted keying systems.

Q: What materials is the lock made from?
A: The bolt is made from stainless steel, and the body is made from zinc.

Q: How many cylinders does the lock include?
A: The lock includes 2 cylinders for key operation from both sides.

Q: What warranty does this product come with?
A: It comes with a 25-year mechanical warranty from Lockwood.

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