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.
G80 Lifting Chain with Hook Head, Manganese Steel Alloy Chain for Hoisting Stones and Towing
$79.00
Car Interior Button Frame and Window Switch Chrome Panel, New Energy Vehicle ABS Parts with Hot Melt Welding and Injection Molding
$96.00
Foldable Multi-Function Tire Stone Removal Tool for Cars
$53.60
Premium 3D Printing Pen RP600A, No Display, Best-Selling Gift for Kids, 3D Pen RP6
$230.15
Marie's Thickened 8K Watercolor Pad, 16K Portable Sketchbook for Beginners and Art Students - Travel-friendly Multi-use Painting Book
$7.23
Car Tire Stone Removal Hook - Stainless Steel Multi-Function Tool for Cleaning Pebbles from Treads
$3.80
Premium Thickened 50% Wool Felt Mat for Calligraphy and Chinese Painting - Dedicated Tablecloth for Four Treasures of the Study; Ideal for Student Practice
$2.59
Fish Chunk Meat Tumbling Mixer Dried Meat Seasoning Mixer Red Oil King Oyster Mushroom Mixing Machine Yikang Machinery
$17,419.00
Custom Company Door Plaques, Bronze Plates, Outdoor Stainless Steel Signs, Factory Display Boards, Metal Advertising Signs with Etched Customization
$25.50
Blower Motor for BMW 5 Series, 6 Series, 7 Series, 8 Series, F90 M5, G Chassis
$480.00
Large Size Thickened Felt Mat for Calligraphy, Wool Felt Pad for Brush Practice, Traditional Chinese Painting Desk Mat
$13.50
Creative Studio Sign Custom Door Plate Company Billboard LOGO Design Storefront Display
$119.00
Router Storage Box, Cable Organizer, WiFi Set-Top Box Stand, Gigabit Broadband Shelf with Wall Mount
$23.60
Baby Rattle with Teether for 0-6 Month Newborns, Sand Shaker and Hand Drum for Visual and Auditory Tracking
$10.50
Splicable Folding Food Warmer Partition Temperature Control Insulation Plate Hot Dish Plate Induction Cooker Plate Constant Temperature Heating Food Warmer Table Mat
$315.00
Marie's Kneaded Eraser Cotton for Sketching, Student-Use Blending Stump, Makeup Sponge for Art Students, Paper Blending Tool, Soft Absorbent Water-Drop Sponge Ball for Sketching
$8.33
Soft Cheese Processing Equipment, Lab-Type Cheese Stretching and Mixing Machine, Multi-Function Hot Water Stretching Unit
$210,210.00
Imported IKO Needle Roller Bearings TAF121912, 121915, 121916, 142212, 142216, 142220
$26.00
Portable Watercolor Sketchbook – 100% Cotton Mini Square Pocket Book for Travel, On-the-Go Sketching, Tear-Off Art Pages
$10.90
Dongguan Rotary Pad Printer Manufacturer - Fully Automatic 4-Station Pad Printer for Plastic, Metal, Text, Patterns, and Logos
$500.00
Custom Solid Wood Plaque, Antique-Style Wooden Sign with Engraving, Shop Signboard, Couplet, Carved Wood Plaque
$17.00
No-Drill Over-Toilet Storage Rack for Bathroom Wall Gap Behind Tank
$24.55
Upgraded Breakfast Food Warmer Display Cabinet - For Fried Chicken, Pies, Roasted Meat, with Crisp Preservation and Constant Temperature Control
$4,920.00
Butterfly Silicone Mold for Handmade Soap, Fondant, Chocolate, and Ice Cream
$14.00
Professional Music Services: Harmony Arrangement, Vocal Recording, Sheet Music, Mixing & Campus Orchestration
$20.00
Chunfei Grocery Store Yunan GR02 Gravel Bike Thru-Axle Disc Brake Light Load V Travel Many Rack Mounts
$6,445.00
![Pad Printing Silicone Head Mold with Blister Cover, Long Crystal Mold for Pad Printing Machines [Long Strip]](https://www.gosteppe.com/cache/small/product/270328/legacy-main-ca45adf23667d6b16fd9f3c4.webp)
Pad Printing Silicone Head Mold with Blister Cover, Long Crystal Mold for Pad Printing Machines [Long Strip]
$5.00
Remote-Controlled Automatic Fog Cannon for Xinjiang and Inner Mongolia Mines - Explosion-Proof, Anti-Freeze, Noise-Reducing Dust Suppression Sprayer for Coal Yards
$6,000.00
UV Glue for Bonding PET to Melamine Board, PC to Melamine Veneer, Invisible Adhesive for Glass Sliding Doors with UV Curing
$326.00
Mobile Welding Fume Purifier, Industrial Soldering Smoke Extractor, Welding Fume Collector and Exhaust Machine
$2,760.00
