Lockwood 3577 Mortice Dual Cylinder Entry Deadlatch (No Cylinder)
The Lockwood 3577 Mortice Dual Cylinder Entry Deadlatch is designed for high security commercial applications requiring controlled key access from both sides of the door.
This configuration enables independent key operation internally and externally, making it suitable for restricted access environments where key control and emergency access protocols are required.
Supplied without cylinders, this model allows flexible integration into master key or restricted keying systems.
Usually ships in 10 business days
Non-Returnable Item: This product is a special order and is not returnable.
Key Features
- Dual cylinder entry deadlatch design
- Key operation from both sides of the door
- Supplied without cylinders for flexible keying systems
- Designed for restricted and controlled access applications
- Heavy duty mortice lock construction
- Compatible with Lockwood door furniture ranges
- Tested to Australian Standards
Suitable Uses
- Commercial buildings and offices
- Hospitals and healthcare facilities
- Schools and educational environments
- Hotels and accommodation buildings
- Restricted access areas requiring dual key control
Specifications
Available Finish Options
-
Chrome Plate
-
Satin Chrome
Frequently Asked Questions
Are cylinders included?
No, cylinders must be supplied separately.
Why use dual cylinder?
Dual cylinder allows controlled access from both sides using keys.
Is this suitable for emergency access?
Yes, it is commonly used where controlled emergency access is required.
Additional Information
- Commonly specified in Australian commercial and institutional buildings.
- Used where key control and restricted access is critical.
- Incorrect cylinder selection is a common installation issue.
- Compatible with Lockwood master key systems.
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 Electric Mortice Locks Catalogue
Lockwood Electric Mortice Locks Catalogue
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.
