Lockwood 3640 Short Backset Mortice Lock 22mm Bolt (Metal) - Satin Chrome
The Lockwood 3640 Short Backset Mortice Lock is a heavy duty locking solution designed specifically for narrow stile doors where standard backset locks cannot be installed. It features a 22mm metal swing bolt and delivers reliable primary locking performance.
This lock provides positive deadbolt action and can be operated via key, turn knob, escape turn or lever handle depending on configuration. It is suitable for both hinged and sliding door applications.
Commonly used across commercial and industrial environments, the 3640 series is known for durability and consistent performance in high traffic conditions.
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Non-Returnable Item: This product is a special order and is not returnable.
Key Features
- Short backset design for narrow stile door installations
- 22mm metal swing bolt for secure locking
- Positive action deadbolt operation
- Operable via key, turn knob, escape turn or handle
- Heavy duty construction for commercial environments
- Suitable for hinged and sliding door applications
Suitable Uses
- Narrow stile aluminium doors
- Commercial buildings and shopfronts
- Schools, hospitals and institutions
- Retail and hospitality environments
- Sliding door lock applications with jamb mounting
Full Specifications
Frequently Asked Questions
Is this suitable for narrow stile doors?
Yes, this model is specifically designed for narrow stile applications.
Can this be used on sliding doors?
Yes, when mounted to the door jamb with the strike on the door face.
What is a common installation mistake?
Incorrect strike alignment can prevent proper bolt engagement.
Additional Information
- Commonly used on aluminium shopfront doors across Australia.
- Short backset solves clearance issues in narrow profiles.
- Suitable for retrofit and new installations.
- Requires correct cylinder and door furniture selection.
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.
