
Lockwood Wedgeless DLX Lock - Face Fix 4mm and 6mm Backsets - 345-346
The Lockwood Wedgeless DLX Lock is a locking face fix window fastener designed for aluminium and PVC window applications. This innovative Interlock design incorporates the wedge into a folding flap attached to the base of the handle, removing the need for a separate wedge component.
The Wedgeless Deluxe uses a longer 107mm handle and a push button cylinder locking function, making it a practical option where secure operation and straightforward daily use are both important. It is suited to residential awning and casement windows.
This range is available in both 4mm and 6mm backset configurations. Finish variants are available across the range, while the main mechanical difference is the backset selection.
Usually ships in 3 business days
Key Features
- Face fix locking window fastener for aluminium and PVC windows
- Patented wedgeless design with folding flap built into the handle base
- Longer 107mm handle length
- Push button cylinder locking operation
- Available in 4mm and 6mm backsets
- High quality pressure die-cast main body with colour matched injection moulded nylon flap
- Easy to install and operate
Suitable Uses
- Residential aluminium windows
- PVC window installations
- Awning windows
- Casement windows
- Window upgrades where a separate wedge is not preferred
Full Specifications
Available Finish Options
Black
Silver
Primrose
White
Frequently Asked Questions
What makes this fastener “wedgeless”?
The wedge function is built into a folding flap attached to the base of the handle, so a separate wedge is not required.
How do I choose between 4mm and 6mm?
The correct backset depends on the window profile and the required fastener geometry. It should match the window setup already in use or the installer’s specification.
Is this suitable for aluminium and PVC windows?
Yes. The supplied product data states it is designed for use with either aluminium or PVC windows.
Additional Information
- Wedgeless window fasteners are commonly chosen where installers want a cleaner look and fewer separate frame mounted parts.
- The key setup issue is selecting the correct backset. A mismatch can affect closure, sealing, and handle position.
- These fasteners are commonly used in Australian residential window hardware applications on awning and casement windows.
- Black variants show a shorter supplied dispatch time in the provided data than some other finish variants.
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 Wedgeless Installation Instructions

Lockwood Wedgeless Installation Instructions
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.