Floor Spring S275 Specifications
Below are the main specifications of Floor Spring S275 for buyers, contractors, architects, and project planners to evaluate door size, load requirement, and installation conditions. Designed as a narrow floor spring, slim floor spring, and compact floor spring, S275 is especially suitable for projects where installation space is limited but stable heavy-duty performance is still required. If you would like to compare more door control products, please also review our Floor Spring Series, Transom Closer Series, and Wooden Door Closer Series.
| Item |
Specification |
| Model |
S275 |
| Product Type |
Floor Spring / Slim Floor Spring / Compact Floor Spring |
| Applicable Door Type |
Single-action offset door / Double-action center-hung door |
| Max. Door Width |
1100mm |
| Max. Door Weight |
200kg |
| Max. Opening Angle |
180° |
| Fire Door Applicability |
Non-hold-open option available for fire doors |
| Closing Speed Adjustment Range |
180° ~ 15° |
| Latching Speed Adjustment Range |
15° ~ 0° |
| Backcheck Function |
Mechanical backcheck function |
| Closing Power Size |
Fixed |
| Cement Box Size (mm) |
L285 x W82 x H50 |
| Inner Adjustable Space of Cement Box (mm) |
L8 x W10 |
| Cover Plate Size (mm) |
L308 x W105 x T1.5 |
Closing Force, Applicable Door Width and Door Weight
| Item |
EN2 |
EN3 |
EN4 |
| Applicable Door Width (mm) |
750~850 |
850~950 |
950~1100 |
| Applicable Door Weight (kg) |
60~100 |
100~150 |
150~200 |
How to Choose the Right Floor Spring?
When selecting a floor spring, we recommend evaluating the application, door weight, installation space, and whether a narrower body is required. The comparison below helps buyers, contractors, and specifiers quickly understand the differences between each model.
| Model |
Type |
Recommended Application |
Main Advantage |
| S200 |
Fixed Type |
General commercial spaces, offices |
Standard floor spring, entry-level solution |
| Exchangeable S200 |
Exchangeable Type |
Replacement projects, maintenance applications |
Only the body needs replacement for easier maintenance |
| S220 |
Fixed Type |
General commercial spaces, offices, storefront doors |
Stable and durable standard specification |
| Exchangeable S221 |
Exchangeable Type |
Commercial spaces, offices, storefront doors |
Replaceable design for easier long-term maintenance |
| S275 |
Slim / Heavy Duty |
Narrow space, heavier door, fire-rated doors |
Slim + High Load + Mechanical Backcheck |
| S280 |
Heavy Duty / Exchangeable |
Large doors, high-load projects, fire-rated doors |
Heavy-duty solution for demanding entrance systems |
Advantages of Narrow & Slim Floor Spring Design
S275 combines slim installation dimensions with a maximum 200kg load capacity, making it especially suitable for projects where floor space is restricted but stable closing and heavy-duty performance are still required. As a slim floor spring for tight space, a compact floor spring for narrow frame, and a space saving floor spring solution, it is a practical choice for commercial doors, glass doors, and selected fire door applications.
Floor Spring S275 FAQ
Q1: What is a narrow or slim floor spring, and when is Floor Spring S275 suitable?
A narrow floor spring or slim floor spring refers to a floor spring designed with a narrower cement box or installation footprint. S275 is suitable for projects where door weight is high but installation space is limited.
Q2: What is the maximum door weight supported by Floor Spring S275?
S275 supports a maximum door weight of 200kg and a door width up to 1100mm, making it suitable for heavy commercial doors, selected glass door systems, and large entrance applications.
Q3: What is the biggest difference between S275 and standard floor springs?
The main difference is that S275 combines a slimmer installation size with high load-bearing capacity. It is a practical floor spring for limited installation space where standard floor springs may not fit.
Q4: Can Floor Spring S275 be used as a narrow body floor spring for glass door?
Yes. Depending on the door structure and installation condition, S275 can be used as a narrow body floor spring for glass door systems in commercial and architectural projects.
Q5: Is the closing speed adjustable on Floor Spring S275?
Yes. The closing speed adjustment range is 180° to 15°, and the latching speed range is 15° to 0°, allowing precise adjustment based on door weight and usage environment.
Q6: When should I choose Floor Spring S275 for narrow installation space projects?
If the door is heavy, the installation trench or floor width is narrow, or the project requires a compact floor spring for narrow frame and a space saving floor spring solution, S275 is often the preferred choice.
Need a Floor Spring Quote or Product Recommendation?
If you are looking for a slim floor spring manufacturer, a reliable floor spring supplier, or an OEM / ODM commercial door hardware partner, CHIEN CHIN can recommend the right solution based on door type, door weight, installation conditions, and project requirements.
