Lockwood 3578 Mortice Lock Holdback Satin Chrome 3578SC
The Lockwood 3578 Mortice Lock Holdback is designed for applications requiring a latch holdback function within commercial door systems.
This lock allows the latch to be held in the retracted position, making it suitable for high traffic doors or areas such as toilet facilities where free passage is required temporarily.
Part of the Lockwood Synergy series, it is built for durability and compatibility with a wide range of door furniture.
- Mortice lock with latch holdback function
- Allows latch to remain retracted when required
- Suitable for high traffic and utility door applications
- Heavy duty construction for commercial use
- Compatible with Lockwood Synergy lock systems
- Works with a wide range of Lockwood door furniture
- Tested to Australian Standards
Suitable Uses
- Commercial buildings and offices
- Schools and educational facilities
- Hospitals and healthcare environments
- Toilet and amenity doors
- High traffic internal doors
Specifications
Frequently Asked Questions
What is a holdback function?
It allows the latch to be held in the retracted position for free door movement.
Is this suitable for toilet doors?
Yes, it is commonly used where temporary free passage is required.
Can the holdback be disengaged?
Yes, the latch can be returned to normal operation when required.
Additional Information
- Commonly specified in Australian commercial and institutional projects.
- Used where doors need to remain open temporarily without latching.
- Incorrect specification may occur where locking is required instead.
- Compatible with Lockwood plate and rose furniture 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 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.
