Discover the Symmetry door furniture range, combining style and security for every home.
Explore the Symmetry door furniture range, designed for builders and designers who demand quality and style. With features like the innovative OneCyl® interchangeable cylinder and robust Australian Standards compliance, enjoy peace of mind with a 25-year mechanical warranty and a 5-year finish guarantee. Ideal for any residential application.

Let’s explore its impressive features:
Features:
- Versatile Application:
- Ideal for builders, developers, specifiers, and interior designers.
- Suitable for any residential application.
- Quality Assurance:
- Produced to meet Australian market quality and style requirements.
- All products tested according to Australian Standards for security and durability.
- OneCyl® Solution:
- Exclusive one cylinder assembly solution granting cylinder interchangeability.
- Compatible with a variety of restricted keying systems.
- Warranty:
- 25 year Mechanical Warranty from Lockwood.
- 5 year finish Guarantee; Everbrass finish has a 25 year Guarantee.
- Adjustable Latch:
- Adjustable to suit 60-70mm backset.
- Latch features a 13mm throw.
- Door Compatibility:
- Suitable for both left and right handed doors.
- Accommodates door thickness range of 35-51mm.
- Anti-Rattle Strike:
- Includes strike with anti-rattle tab for enhanced security.
Elevate your home’s security and style with the Symmetry door furniture range—order now for unparalleled quality and convenience!
General Information:
Product Range: Symmetry door furniture
Target Users: Builders, developers, specifiers, and interior designers
Quality and Standards:
Produced to meet Australian market quality and style requirements.
Tested in accordance with security and durability requirements of Australian Standards.
Warranty Information:
Mechanical Warranty: 25 years (Lockwood)
Finish Guarantee: 5 years (except Everbrass finish which has a 25 year Guarantee)
Features:
Latch adjustable to suit 60-70mm backset.
OneCyl cylinder solution for a range of restricted keying systems.
Suitable for both left and right handed doors.
Latch has a 13mm throw.
Strike includes anti-rattle tab.
Technical Specifications:
Model No: 7541ASSS
EAN: 9311847451711
Door Thickness Range: 35-51mm
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.