
Lockwood 3542 Short Backset Mortice Deadlock & 90 Degree Lever - Satin Chrome
The Lockwood 3542 Short Backset Mortice Deadlock with 90 Degree Lever is a compact locking solution designed for narrow stile sliding and swing doors. It combines a mortice deadlock mechanism with a 90 degree lever for controlled operation.
Part of the Lockwood 3540 Series, this unit is commonly specified in commercial aluminium door systems where space constraints require a short backset configuration and reliable deadlocking performance.
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Key Features
- Short backset mortice deadlock for narrow stile doors
- Includes 90 degree lever operation
- Suitable for sliding and swing door applications
- Tested to Australian Standards
- Compatible with restricted keying systems
- Part of Lockwood Synergy mortice lock range
- Available in left and right hand configurations
- Durable commercial grade construction
Suitable Uses
- Commercial aluminium sliding doors
- Narrow stile door systems
- Office and retail security applications
- Fabricator door assemblies
- Applications requiring compact mortice locking solutions
Specifications
Item Code Family - Lockwood 3542 Short Backset Mortice Lock Variants
Frequently Asked Questions
What doors is this lock suitable for?
It is designed for narrow stile sliding and swing doors in commercial applications.
Is handing important?
Yes, this model is available in left and right hand variants and should be selected accordingly.
Can it be used with restricted keying?
Yes, it supports restricted keying when paired with compatible cylinders.
Additional Information
- Commonly specified in Australian commercial door hardware applications.
- Short backset allows installation in tight aluminium profiles.
- Correct handing selection is essential for proper installation.
- Part of the Lockwood Synergy mortice lock system.
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.