Lockwood HD Floor Spring EN3-6 Adjustable Hold Open Door Closer up to 300kg - Satin Stainless Steel
The Lockwood ST8011 Heavy Duty Floor Spring is a high performance double action door closer designed for pivoted doors in demanding commercial environments. Engineered to handle door leaf weights up to 300kg, it provides smooth and controlled closing with a wide range of adjustable functions.
This floor spring is suitable for both single and double action doors, offering flexibility in installation and performance tuning. With integrated hold open, delayed action and back check, it delivers reliable operation across a wide range of door applications.
Designed and manufactured to high standards, the ST8011 is commonly specified where durability, control and adaptability are required.
Usually ships in 3 business days
Non-Returnable Item: This product is a special order and is not returnable.
Key Features
- Suitable for doors up to 300kg
- Adjustable power EN size 3 to 6
- Adjustable closing and latching speeds
- Integrated hold open function (85° to 170°)
- Delayed action closing control
- Built-in mechanical back check for door protection
- Heavy duty cast iron body construction
- Pressure relief valve for durability
- Universal cover plate design
Suitable Uses
- Commercial glass doors
- Pivoted aluminium or timber doors
- High traffic entry points
- Retail and office buildings
- Internal and external door applications
Specifications
Dimensions
Dimensions vary depending on installation requirements and floor box configuration.
Frequently Asked Questions
Can this be used on glass doors?
Yes, it is commonly used with pivoted glass doors when correctly installed.
Does this include hold open?
Yes, the hold open function is adjustable between approximately 85° and 170°.
What is a common installation mistake?
Incorrect alignment of pivots can lead to poor closing performance.
Additional Information
- Commonly specified in high traffic commercial environments.
- Offers flexibility to cover multiple door sizes with one unit.
- Preferred by installers for adjustable performance on site.
- Back check feature helps protect walls and door hardware.
- Requires professional installation for best performance.
This product is covered by a 25-year mechanical warranty against defects in materials and workmanship under normal use.
Lockwood Floor Closers Catalogue
Lockwood Floor Closers Catalogue
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.
