Lockwood 3540 Short Backset Mortice Deadlock Cylinder & Lever - Satin Chrome
The Lockwood 3540 Short Backset Mortice Deadlock Cylinder and Lever is designed for narrow stile door applications where standard mortice locks cannot be accommodated. It combines key cylinder operation with internal lever functionality for controlled access and egress.
This configuration is commonly used in commercial aluminium doors and architectural glazing systems, offering reliable deadlocking performance with convenient internal operation. The short backset design allows installation in slim door profiles without compromising strength.
Key Features
- Short backset mortice deadlock for narrow stile doors
- Cylinder and internal lever configuration
- Positive action swing bolt for secure locking
- Suitable for aluminium hinged and sliding doors
- Provides convenient internal operation via lever
- Designed for commercial and architectural applications
- Durable construction for high use environments
Suitable Uses
- Aluminium framed commercial doors
- Narrow stile hinged doors
- Sliding door locking systems
- Retail, office and institutional buildings
- Doors requiring internal lever operation
- Architectural glazing systems
Specifications
Item Code Family
Frequently Asked Questions
What is the benefit of a cylinder and lever configuration?
It allows key access from one side and convenient lever operation from the other side for easier exit.
Is this suitable for narrow aluminium doors?
Yes, the short backset design is specifically intended for narrow stile door applications.
Does this include the cylinder and lever hardware?
Configuration may vary depending on supply. Confirm inclusions before installation.
Additional Information
- Commonly used in Australian commercial aluminium door systems and shopfront installations.
- Short backset locks are essential for slim door profiles where standard locks cannot be fitted.
- Cylinder and lever configuration improves usability for internal exit.
- Incorrect strike alignment or installation can affect lock performance and longevity.
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)
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Lockwood Warranty
Lockwood branded products are covered by manufacturer warranties issued by ASSA ABLOY Australia Pty Ltd. Warranty periods vary by product type, with separate cover for mechanical components, electrical and electronic parts, keys, and finishes.
The summary below sets out the standard warranty structure. All warranty claims are handled by Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries. Full terms and exclusions are set out in the official Lockwood warranty document linked at the base of this page.
Warranty 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.
- PVD and VIVID finishes: typically up to 10 years.
- Symmetry range finishes: typically up to 5 years.
- Decorative finishes (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 naturally age and change appearance over time. This is not considered a defect.
- Tea staining of stainless steel is not covered where the required cleaning and maintenance have not been followed.
How to Make a Claim
- Contact Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries with your proof of original purchase.
- Keep the product securely packed and clearly identified, ready for assessment.
- Where a claim is escalated to the manufacturer, ASSA ABLOY may issue a case number before goods are returned.
- ASSA ABLOY assesses the claim and determines repair, replacement with the same or closest equivalent product, or refund of the purchase price.
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.
These manufacturer warranties apply in addition to your rights under the Australian Consumer Law. Our goods come with guarantees that cannot be excluded under the ACL. You are entitled to a replacement or refund for a major failure and to compensation for any other reasonably foreseeable loss or damage. Where a failure does not amount to a major failure, you are entitled to have the goods repaired or replaced.
