Lockwood 4571 Mortice Escape Deadlatch - 89mm Backset - Satin Chrome
The Lockwood 4571 Mortice Escape Deadlatch is a heavy duty primary lock designed for commercial applications requiring secure locking with emergency egress capability.
Built on the proven Lockwood 3570 series platform, it provides strong deadlocking performance while allowing safe internal escape operation when required.
It is commonly specified in commercial and institutional buildings where both security and safety compliance are critical.
Usually ships in 10 business days
Non-Returnable Item: This product is a special order and is not returnable.
Key Features
- 89mm backset for commercial door applications
- Escape function allows internal egress
- 19mm stainless steel bolt for secure locking
- Compatible with Lockwood cylinders and door furniture
- Heavy duty construction for high traffic environments
Suitable Uses
- Commercial and industrial buildings
- Schools, hospitals and institutions
- Doors requiring secure locking with emergency escape
- Compliance focused installations
Specifications
Frequently Asked Questions
Does this include a cylinder?
No, this model is supplied without a cylinder to allow custom keying selection.
What does the escape function do?
It allows the door to be opened from the inside without a key for safe egress.
What is a common installation mistake?
Incorrect handing selection can result in improper operation.
Additional Information
- Commonly specified in Australian commercial compliance projects.
- Allows flexible configuration with different cylinder types.
- Part of the modular Lockwood 3570 mortice lock system.
- Installation should be completed by qualified locksmiths.
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.
