Lockwood 3640 Short Backset Mortice Deadlock Cylinder Escape Turn (Metal) - Satin Chrome
The Lockwood 3640 Short Backset Mortice Deadlock with cylinder and escape turn is designed for secure locking of narrow stile hinged and sliding doors where standard backset locks are unsuitable.
This configuration provides external key operation with internal escape turn functionality, making it ideal for commercial applications requiring both security and safe exit capability.
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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 operation with internal escape turn
- 22mm projection swinging deadbolt
- Positive deadlocking action for secure engagement
- Suitable for commercial and high traffic environments
- Compatible with Lockwood 3640 series hardware
Suitable Uses
- Narrow stile aluminium doors
- Commercial shopfront doors
- Sliding and hinged door applications
- Schools, hospitals and commercial buildings
- Applications requiring internal escape functionality
Specifications
Frequently Asked Questions
What is an escape turn?
It allows the door to be unlocked from the inside without a key for fast exit.
Is this suitable for sliding doors?
Yes, it is commonly used on sliding doors when paired with the correct strike.
What is a common installation mistake?
Incorrect handing selection or incorrect strike choice can affect lock performance.
Additional Information
- Commonly specified across Australia for commercial aluminium door systems.
- Short backset design is critical for narrow stile applications.
- Escape turn improves usability in occupied buildings.
- Part of the Lockwood 3640 mortice lock ecosystem with multiple compatible accessories.
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 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.
