
Lockwood 3574 Passage Latch Mortice Lock 60mm Backset Satin Chrome 3574SC
The Lockwood 3574 Passage Latch is a primary mortice lock designed for applications requiring a non-locking passage function.
Featuring a 60mm backset, this latch allows free operation from both sides of the door and is suited to high traffic commercial environments where locking is not required.
Part of the Lockwood Synergy series, it is built for durability and flexibility, allowing future adaptation to other locking functions if required.
Key Features
- Passage latch with no locking function
- 60mm backset suitable for standard door configurations
- Heavy duty construction for commercial use
- Part of Lockwood Synergy mortice lock system
- Adaptable platform for future lock function upgrades
- Compatible with a wide range of Lockwood door furniture
- Tested to Australian Standards
Suitable Uses
- Commercial buildings and offices
- Schools and educational facilities
- Hospitals and healthcare environments
- Hotels and accommodation buildings
- Internal doors requiring free passage operation
Specifications
Frequently Asked Questions
Does this lock the door?
No, this is a passage latch and does not provide any locking capability.
Can this be upgraded later?
Yes, it is part of the Synergy system and can be adapted to other functions.
Is this suitable for external doors?
It is typically used for internal applications where locking is not required.
Additional Information
- Commonly specified in Australian commercial projects for internal doors.
- Part of a modular system allowing easy functional upgrades.
- Incorrect selection is common when locking is later required.
- Compatible with Lockwood rose and plate furniture ranges.
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 Synergy Mortice Locks Catalogue

Lockwood Synergy Mortice Locks Catalogue
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.