
Lockwood Downward Acting Turn Knob Assembly - Left Hand - Satin Chrome
The Lockwood SP3571-7004SC Downward Acting Turn Knob Assembly is a left hand internal locking component designed for use with Lockwood 3570 series mortice locks. It provides controlled manual operation of the locking mechanism via a downward turning motion.
This assembly is commonly used in commercial door hardware applications where directional operation and ergonomic control are required. The downward acting design ensures consistent engagement and release of the locking function.
It is supplied in a satin chrome finish and is configured specifically for left hand door applications.
10 business days.
Key Features
- Downward acting turn knob design for controlled locking operation
- Left hand configuration for specific door handing
- Designed for use with Lockwood 3570 series mortice locks
- Durable construction for commercial applications
- Satin chrome finish
Suitable Uses
- Commercial door hardware applications
- Internal locking control for mortice locks
- Lockwood 3570 series installations
- Doors requiring directional locking operation
Specifications
Dimensions
Manufacturer documentation does not publish specific dimensional data for this assembly.
Frequently Asked Questions
Is this compatible with all Lockwood locks?
No, it is specifically designed for the 3570 series mortice lock range.
What does left hand mean?
It refers to the door handing. This unit is designed for left hand door configurations.
Can this be reversed?
No, handing is fixed and must match the door setup.
Additional Information
- Commonly used in commercial installations requiring internal locking control.
- Incorrect handing selection is a frequent ordering mistake.
- Must be matched with compatible Lockwood mortice lock bodies.
3570 Series Installation Instructions

3570 Series Installation Instructions
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.