Interlock 440 CHH HD Friction Stay – P568B
The Interlock 440 CHH HD is a heavy duty 4-bar aluminium friction stay designed for top hung window sashes requiring higher load capacity.
Manufactured from extruded aluminium and finished in black, this heavy duty model is designed for larger residential and light commercial window applications.
This product is a friction stay hinge only. Window operators, restrictors and fixings are not included.
20 Days
Key Features
- Heavy Duty (HD) configuration.
- 4-bar friction stay construction.
- Manufactured from extruded aluminium.
- Black finish.
- No sliding channels.
- Unique “pull-in” feature.
- Factory set friction levels – no on-site adjustment required.
- Designed for retrofit applications.
- Supplied as a pair.
Full Specifications
Frequently Asked Questions
Is this suitable for heavy window sashes?
Yes. The 440 CHH HD supports sash weights up to 43kg.
Is friction adjustable?
No. Friction levels are factory set.
What cavity size does this fit?
Designed to fit cavity 30 ±1mm x 20 ±1mm.
Additional Information
- Heavy Duty model selected based on sash weight and height.
- Confirm structural suitability before installation.
- Supplied as a pair.
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.
Official Warranty Document
