Lockwood 3540 Short Backset Mortice Deadlock Cylinder & Escape Turn - Satin Chrome
The Lockwood 3540 Short Backset Mortice Deadlock Cylinder and Escape Turn is designed for narrow stile door applications where secure external locking and safe internal exit are required. It combines key cylinder operation externally with an internal escape turn for quick and reliable egress.
This configuration is widely used in commercial aluminium doors and architectural glazing systems, particularly where compliance and occupant safety require immediate internal unlocking without a key.
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Non-Returnable Item: This product is a special order and is not returnable.
Key Features
- Short backset mortice deadlock for narrow stile doors
- External key cylinder with internal escape turn
- Positive action swing bolt for secure locking
- Allows immediate internal exit without a key
- Door thickness range suitable for 28mm to 58mm doors
- Suitable for aluminium hinged and sliding doors
- Designed for heavy duty commercial applications
Suitable Uses
- Commercial aluminium framed doors
- Narrow stile hinged doors
- Sliding door locking systems
- Buildings requiring safe internal egress
- Retail, office and institutional applications
- Architectural glazing systems
Specifications
Item Code Family
Frequently Asked Questions
What is the purpose of an escape turn?
It allows immediate unlocking from the inside without a key, improving safety and ease of exit.
Is this suitable for narrow aluminium doors?
Yes, the short backset design is specifically intended for narrow stile door applications.
Can this be used in commercial buildings?
Yes, it is widely used in commercial environments requiring secure locking with internal escape capability.
Additional Information
- Commonly specified in Australian commercial aluminium door systems.
- Escape turn configurations are often required for compliance in certain building types.
- Short backset locks are essential for narrow stile door profiles.
- Correct installation and strike alignment are critical for reliable operation.
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.
