ABOUT THIS DOOR CLOSER
The QS900DA Door Closer – Non Hold Open (NHO) is a heavy-duty hydraulic surface mounted door closer with delayed action, designed for large commercial doors and high traffic entrances.
Delayed action allows the door to remain open slightly longer before closing, improving accessibility for people and equipment moving through the doorway.
KEY FEATURES
Brand: QS Doorware
Model: QS900DA
Function: Non Hold Open (NHO)
Door Closer Type: Heavy Duty Surface Mounted Door Closer
Mechanism: Rack & Pinion
Special Feature: Delayed Action (DA)
EN Rating: EN3–6 Adjustable
Maximum Door Width: 1400mm
Maximum Door Weight: 120kg
Arm Type: Standard Arm
Finish: Silver
Fire Rated: Yes
WHAT IS DELAYED ACTION?
Delayed action slows the door closing speed after opening wide, allowing extra time for people, wheelchairs or equipment to pass safely.
HOLD OPEN OR NON HOLD OPEN
This product is the Non Hold Open (NHO) version.
Non Hold Open (NHO)
The door always closes automatically and cannot remain open.
Hold Open (HO)
Allows the door to remain open when pushed fully open.
SUITABLE FOR
• Commercial doors
• High traffic entrances
• Hospitals
• Schools
• Public buildings
Door Materials
• Timber doors
• Aluminium doors
• Steel doors
HOW TO CHOOSE THE CORRECT DOOR CLOSER
Door closers are selected according to door width and weight.
Typical guideline:
EN2–3 → light internal doors
EN3–4 → standard office doors
EN5+ → heavy commercial doors
The QS900DA EN3–6 rating makes it suitable for large and heavy commercial doors.
INSTALLATION INFORMATION
Surface door closers can usually be installed in three ways:
• Door leaf installation
• Frame (transom) installation
• Parallel arm installation
The correct installation depends on the door configuration.
WHAT'S INCLUDED
• Door closer body
• Arm assembly
• Fixing screws
• Installation instructions
DOOR CLOSER QUICK SELECTION GUIDE
Door closers are selected according to door width and door weight.
| Door Width | Typical Door Weight | Recommended Door Closer |
|---|---|---|
| Up to 850mm | Up to 60kg | QS680 |
| Up to 950mm | Up to 80kg | QS690V |
| Up to 1100mm | Up to 100kg | QS750 |
| Up to 1100mm | Medium traffic commercial doors | QS760ET |
| Up to 1400mm | Heavy duty commercial doors | QS900DA |
| Concealed installation | Architectural doors | QS970 |
NEED HELP CHOOSING A DOOR CLOSER?
Not sure which door closer 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 door closer 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
