QS4439 Single Action Spring Hinge – 100mm Stainless Steel | Pair | QS Doorware
The QS4439 is a 100mm single action spring hinge in stainless steel, sold as a pair and rated for doors up to 40 kg. Designed to automatically return a door to its closed position after each use, it is built by QS Doorware and backed by a 5-year warranty. A reliable choice for interior and exterior doors in South African residential, commercial, and hospitality applications.
Single action spring hinges allow the door to swing in one direction only and self-close under spring tension — ideal for fire doors, passage doors, and any door that must remain closed when not in use.
Key Features
- Single action – door swings in one direction and self-closes automatically
- 100mm stainless steel construction – corrosion-resistant and low maintenance
- Rated for doors up to 40 kg
- Sold as a pair – two hinges included per pack
- Adjustable spring tension – closing force can be set to suit your door
- 5-year warranty – backed by QS Doorware
- Suitable for interior and exterior timber and aluminium doors
- Ideal for fire doors, passage doors, and high-traffic doorways
Specifications
- Model: QS4439
- Size: 100mm
- Material: Stainless steel
- Action: Single action (one-way swing, self-closing)
- Door weight rating: Up to 40 kg
- Supplied: As a pair (2 hinges)
- Warranty: 5 years
- Brand: QS Doorware
Frequently Asked Questions
What is a single action spring hinge? A single action spring hinge allows a door to swing in one direction only. An internal spring mechanism automatically pulls the door closed after it has been opened, without the need for a separate door closer.
What is the difference between single action and double action spring hinges? A single action spring hinge allows the door to swing in one direction only (push or pull). A double action spring hinge allows the door to swing in both directions — useful for kitchen pass-through doors and saloon-style doors.
How many spring hinges do I need per door? The QS4439 is sold as a pair (2 hinges), which is sufficient for most standard interior doors up to 40 kg. For heavier or taller doors, check the door manufacturer’s load recommendations.
Can this hinge be used on a fire door? Single action spring hinges are commonly used on fire doors to ensure the door self-closes and latches after each use. Confirm that the hinge meets your local fire door compliance requirements before installation.
Is stainless steel suitable for exterior or coastal use? Yes. Stainless steel is highly corrosion-resistant and well-suited to coastal, humid, and exterior environments common in South Africa.
Can I adjust the closing speed? Yes. The spring tension on the QS4439 is adjustable, allowing you to set the closing force to suit the weight and size of your door.
