Description
Reviews
| Brand | - |
| Category | Basic Building Materials / Floor Springs |
| Origin | - |
| Brand | CROWN |
| Model Number | Shanghai N-818 |
| Material | High-Strength Aluminum Alloy |
| Application | Glass Doors (Framed/Frameless) and Aluminum Alloy Doors |
| Max Door Weight | 100 kg (220 lbs) |
| Max Door Width | 950 mm |
| Function | Hydraulic Closing with Optional Hold-Open |
| Installation Type | Floor Mounted (Concealed) |
| Finish | Silver Anodized |
| Warranty | 2 Years Manufacturer Warranty |
Anonymous
Mar 29, 2026
Rating: 3/5
Works well but adjustment is tricky
The mechanism is solid, but adjusting the closing speed took several tries to get right. Once set, it has been working fine for three months.
Anonymous
Mar 26, 2026
Rating: 5/5
Sturdy and silent
Replaced an old noisy hinge with this CROWN N-818. It is completely silent now and feels very robust. Highly recommended for commercial use.
Anonymous
Mar 21, 2026
Rating: 5/5
Reliable hold-open feature
We needed the hold-open function for our restaurant entrance, and this model performs flawlessly. It holds the door at 90 degrees firmly until pushed slightly.
Anonymous
Mar 19, 2026
Rating: 4/5
Good value, installation takes time
The spring works great once installed. Just be prepared that digging out the floor cavity for the unit requires some effort. Instructions could be clearer.
Anonymous
Mar 09, 2026
Rating: 5/5
Excellent durability
We have high traffic in our retail store, and these springs have handled thousands of cycles without any loss in performance. Great product.
Anonymous
Mar 04, 2026
Rating: 5/5
Perfect for heavy glass doors
Installed this on a 12mm frameless glass door in our office lobby. The closing action is smooth and consistent. Very happy with the build quality.
Q: Does this come with the hold-open feature enabled by default?
A: The unit supports the hold-open function, but please check the specific SKU you are purchasing. Some versions are sold as 'with hold-open' and others as 'standard closing only'.
Q: What is the minimum floor depth required for installation?
A: You will need a floor cavity depth of approximately 170mm to properly house the main body of the N-818 floor spring.
Q: Is this suitable for a 10mm tempered glass door?
A: Yes, the CROWN N-818 is designed to work with both framed and frameless glass doors ranging from 8mm to 12mm thickness.
Q: Can I adjust the closing speed myself?
A: Yes, there are adjustment valves on the top cover plate that allow you to regulate the closing speed and latching action using a standard screwdriver.
Q: Is this compatible with aluminum alloy frames?
A: Absolutely. This model is specifically engineered to support both all-glass doors and doors with aluminum alloy frames.
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