ABOUT THIS FLOOR SPRING
The QS880/4 Floor Spring – Non Hold Open (NHO) is a hydraulic floor mounted door closer designed to control the opening and closing of heavy commercial doors.
Floor springs are installed inside the floor beneath the door, providing a concealed and durable closing mechanism while allowing the door to operate smoothly.
Floor springs are commonly used on glass shopfront doors, aluminium entrance doors and commercial buildings where a traditional surface mounted door closer is not suitable.
The QS880/4 is designed for heavy duty commercial doors up to 150kg, making it suitable for large glass entrance doors and high-traffic commercial environments.
KEY FEATURES
Brand: QS Doorware
Model: QS880/4
Function: Non Hold Open (NHO)
Door Closer Type: Floor Spring
Mechanism: Hydraulic Floor Mounted Door Closer
Operation: Double Action (Door Opens Both Directions)
Maximum Door Width: 1200mm
Maximum Door Weight: 150kg
Cover Plate: Stainless Steel
Finish: Stainless Steel
Fire Rated: EN1154 Compliant
HOLD OPEN OR NON HOLD OPEN
This product is the Non Hold Open (NHO) version.
Hold Open (HO)
Allows the door to remain open at approximately 90°.
This is commonly used in:
• Retail shopfront doors
• Shopping centres
• Public entrances
Non Hold Open (NHO)
The door always returns to the closed position automatically.
This option is typically used for:
• Office entrances
• Security doors
• Controlled access doors
SUITABLE FOR
• Large glass shopfront doors
• Aluminium entrance doors
• Commercial buildings
• Retail stores
• High-traffic entrances
Door Materials
• Frameless glass doors
• Aluminium doors
• Timber doors
RELATED PRODUCTS & ACCESSORIES
To complete your door installation, you may also require the following:
• Pivot Sets → https://thestickman.co.za/collections/pivot-set-and-accessories
• Pivot Locks → https://thestickman.co.za/search?q=pivot+lock
• Cylinders → https://thestickman.co.za/search?q=cylinder
• Pull Handles → https://thestickman.co.za/search?q=pull+handle
Floor springs work together with pivot hardware and locking systems to ensure correct door operation and long-term performance.
HOW TO CHOOSE THE CORRECT FLOOR SPRING
Floor springs are selected according to door width and door weight.
Typical guideline:
Doors up to 100kg → QS860
Medium commercial doors → QS880/3
Heavy commercial doors → QS880/4
Very heavy glass doors → QS895
Adjustable strength floor spring → QS899V
The QS880/4 is suitable for heavy commercial entrance doors and high-traffic areas.
INSTALLATION INFORMATION
Floor springs are installed inside the floor in a floor spring box beneath the door.
The door connects to the floor spring using:
• Bottom pivot spindle
• Top pivot bracket
Professional installation is recommended to ensure correct alignment and performance.
IMPORTANT INSTALLATION NOTE (PIVOT SET REQUIREMENT)
Floor springs are only one part of a complete pivot door system.
While the floor spring controls the closing and opening of the door, the weight of the door is carried by the pivot system.
For heavier doors (especially glass and large timber doors), it is critical to use a heavy-duty pivot set that is correctly rated for the door weight.
In many standard installations, basic pivot sets are used. However, these are often not suitable for large or high-traffic doors.
For optimal performance and long-term durability, we recommend:
• Using heavy-duty pivot sets for doors above 100kg
• Ensuring the top centre and bottom pivot are correctly specified
• Matching the pivot system to the door weight, not just the floor spring
Failure to use the correct pivot hardware can result in:
• Premature wear
• Misalignment
• Poor door operation
If you are unsure, The Stickman Store can recommend a complete pivot system to match your floor spring.
WHAT'S INCLUDED
• Floor spring body
• Stainless steel cover plate
• Fixing components
• Installation instructions
FLOOR SPRING QUICK SELECTION GUIDE
| Door Weight | Typical Application | Recommended Floor Spring |
|---|---|---|
| Up to 100kg | Aluminium entrance doors | QS860 |
| Up to 120kg | Glass shopfront doors | QS880/3 |
| Up to 150kg | Heavy commercial doors | QS880/4 |
| Very heavy doors | Large glass entrances | QS895 |
| Adjustable strength | Commercial entrances | QS899V |
NEED HELP CHOOSING A FLOOR SPRING?
Not sure which floor spring you need?
Send us your door width, door weight, or a photo of the door, and we will recommend the correct model.
If you are unsure which floor spring is suitable for your door, please contact The Stickman Store and we will gladly assist.
📧 Email: hello@thestickman.co.za
📞 Call / WhatsApp: 082 508 7708
