Lockwood 3540 Short Backset Mortice Deadlock Escape Turn Knob - Satin Chrome
The Lockwood 3540 Short Backset Mortice Deadlock Escape Turn Knob is designed for narrow stile door applications where secure locking and quick internal exit are required. It combines a deadlocking function with an internal escape turn knob for ease of use.
This configuration is commonly used in commercial aluminium doors and architectural glazing systems, providing reliable security while allowing convenient internal operation without the need for 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
- Internal escape turn knob for convenient operation
- Positive action swing bolt for secure locking
- Allows quick internal unlocking without a key
- Suitable for aluminium hinged and sliding doors
- Designed for heavy duty commercial applications
- Robust construction for long service life
Suitable Uses
- Commercial aluminium framed doors
- Narrow stile hinged doors
- Sliding door locking systems
- Office and retail environments
- Architectural glazing systems
- Applications requiring internal turn knob operation
Specifications
Item Code Family
Frequently Asked Questions
What is an escape turn knob?
It allows the door to be unlocked from the inside using a knob without requiring a key.
Is this suitable for narrow aluminium doors?
Yes, it is specifically designed for short backset applications such as narrow stile doors.
Can this be used in commercial environments?
Yes, it is commonly used in commercial and architectural applications requiring secure locking and easy internal operation.
Additional Information
- Commonly specified in Australian commercial aluminium door systems.
- Short backset locks are essential for narrow stile door profiles.
- Escape turn knob provides simple and intuitive internal operation.
- Incorrect installation or poor alignment can impact locking performance.
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 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.
