Lockwood 3774MKLL Passage Latch Mortice Lock 60mm Backset - Satin Stainless Steel
The Lockwood 3774MKLL Passage Latch Mortice Lock is a non-locking primary latch designed for internal door applications requiring free operation at all times. Featuring a 60mm backset, it is suited for standard door preparations in commercial and institutional environments.
This passage latch configuration allows both internal and external handles to operate the latch freely, making it ideal for interconnecting doors where no locking function is required.
Part of the Lockwood 3700 Series mortice lock range, this model is engineered for heavy duty use across high traffic environments.
Key Features
- Passage latch function with no locking capability
- 60mm backset suitable for standard door preparation
- Plain latch allows free operation from both sides
- Designed for high traffic commercial environments
- Part of Lockwood 3700 Series mortice lock range
Suitable Uses
- Internal interconnecting doors
- Commercial buildings and offices
- Schools, hospitals and institutions
- Areas where locking is not required
- High traffic access points
Full Specifications
Frequently Asked Questions
Does this lock provide any security locking?
No, this is a passage latch and does not provide any locking function.
Where is this typically used?
It is commonly used on internal doors where free access is required.
What is a common installation mistake?
Using this latch where a locking function is required.
Additional Information
- Commonly specified for internal doors in Australian commercial buildings.
- Ideal for corridors, office doors and interconnecting spaces.
- Heavy duty construction ensures long service life in high traffic areas.
- Should not be used where security or privacy locking is required.
Lockwood branded products purchased new in Australia from authorised resellers are covered against defects in materials and workmanship for:
- Mechanical components: 25 years
- Electrical and electronic components: 2 years (excluding batteries)
Lockwood 3700 Series Mortice Locks Service Manual
Lockwood 3700 Series Mortice Locks Service Manual
Lockwood Warranty Overview
Lockwood branded products are covered by manufacturer warranties issued by ASSA ABLOY Australia Pty Ltd. Warranty periods vary depending on product type, mechanical components, electrical elements, and finish category.
This overview summarises the structure of Lockwood warranty coverage. Full terms, exclusions and claim procedures are set out in the official Lockwood Warranty document.
Warranty Periods Summary
Finish Coverage Guide
- Everbrass finishes: up to 25 years against corrosion, tarnishing and discolouration.
- Stainless steel, polished stainless steel, chrome plating and anodised finishes: typically up to 10 years.
- Decorative finishes including Antique Copper, Architectural Bronze, Oil Rubbed Bronze, Aged Brass, Polished Brass, Satin Brass and related variants: typically up to 2 years against corrosion.
- Unlacquered brass finishes will naturally age and change appearance over time. This is not considered a defect.
- Tea staining of stainless steel is not covered where cleaning and maintenance have not been followed.
What the Warranty Covers
- Defects in material and workmanship during the applicable warranty period.
- Assessment by ASSA ABLOY to determine repair, replacement with the same or closest equivalent product, or refund of purchase price.
Common Exclusions
- Normal wear and tear.
- Misuse, abuse, accidental damage or use outside published specifications.
- Improper maintenance or failure to follow care instructions.
- Unauthorised modification, repair or use of non-genuine parts.
- Exposure to corrosive environments including coastal air, salt spray, chemicals or pollution.
- Removal, refitment or associated labour charges.
- Products not originally sold in Australia through authorised channels.
Warranty Claim Process
- Retain proof of original purchase.
- Return the product through the original place of purchase where applicable.
- If claiming directly, obtain a case number before returning goods.
- Products must be securely packed and clearly identified.
- Warranty assessment determines repair, replacement or refund.
Australian Consumer Law
Lockwood warranties operate in addition to rights available under the Australian Consumer Law. Goods come with guarantees that cannot be excluded. Customers may be entitled to a replacement or refund for a major failure and compensation for reasonably foreseeable loss or damage.
Where a product fails to meet acceptable quality standards and the failure does not amount to a major failure, the customer is entitled to repair or replacement.
