Lockwood 3641 Short Backset Mortice Deadlock Double Cylinder (Metal) - Satin Chrome
The Lockwood 3641RRSC Mortice Deadlock is a double cylinder locking solution designed for secure access control on narrow stile doors.
This configuration requires a key for operation from both sides, making it suitable for higher security applications where internal thumbturn access is not desired.
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Non-Returnable Item: This product is a special order and is not returnable.
Key Features
- Double cylinder mortice deadlock requiring key operation both sides
- Hook bolt engages securely into strike when locked
- Designed for narrow stile sliding and hinged doors
- Provides increased security where internal access must be restricted
- Reversible handing for flexible installation
- Heavy duty construction for commercial use
Suitable Uses
- Commercial aluminium door systems
- Sliding and hinged narrow stile doors
- High security areas requiring key control both sides
- Retail and industrial applications
- Doors where internal thumbturn is not permitted
Specifications
Frequently Asked Questions
Why choose a double cylinder lock?
It prevents unlocking from the inside without a key, increasing security.
Is this suitable for sliding doors?
Yes, it is designed for sliding and hinged narrow stile doors.
Does this include a strike plate?
It is designed to work with compatible Lockwood strikes, which may be supplied separately.
Additional Information
- Commonly used where higher security is required in commercial settings.
- Prevents unauthorised internal unlocking.
- Hook bolt design improves engagement strength with strike.
- Suitable for aluminium and timber door installations.
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.
