Sterling FS 3120
Floor spring for wooden, glass and aluminium doors. Double cylinder, two-speed control, hold open at 90 degrees.
- Door weight, max
- 120 kg
- Door width, max
- 1100 mm
- Opening angle, max
- 120 degrees
- Mounting
- Floor-recessed
Specification
Every row is a stated fact for the FS 3120. Facts not yet stated for this model are left off.
- Type
- Floor spring
- Mounting
- Floor-recessed
- Mechanism
- Double cylinder
- Speed control
- Two-speed control: closing speed from 120°, final closing speed 15° to 0°
- Door weight, max
- 120 kg
- Door width, max
- 1100 mm
- Opening angle, max
- 120 degrees
- Suitable for
- Wooden, glass and aluminium doors
- Hold-open
- Built-in, at 90 degrees
Order codes
One order code.
- Order codes
- FS-3120
The rated
door.
The largest door the FS 3120 is rated for, drawn to scale.
Marks, licences
and tests.
Each claim for the FS 3120 with the standard or licence behind it, and the company's quality system, facility and origin. Marks and tests not yet stated for this model are left off.
| Claim | Evidence | Applies to |
|---|---|---|
| BIS certification, IS 6315:2025 | BIS licence CM/L 7700249814 | FS 3120 |
| Cycle test | Tested to 5,00,000 cycles in a government-approved lab | FS 3120 |
| Quality management | ISO 9001:2015. Certified quality management system covering the company's manufacturing. | MM Efficient Gadget LLP |
| Facility | UL-audited manufacturing facility. In-house R&D and test lab. Painting and powder coating in-house. | MM Efficient Gadget LLP |
| Origin | Made in India | FS 3120 |
Documents
Each file states its format and size before you download it. Files not yet published on this site are sent on request.
| Document | Format | Size |
|---|---|---|
| FS 3120 installation guide | On request | |
| Sterling FS 3120 datasheet | On request | |
| ISO 9001:2015Quality management system certification | On request | |
| BIS licence: floor springsIS 6315:2025, CM/L No. 7700249814 | On request |
Related guides
- Sterling door closers and floor springs, model by modelThe published weight, width, EN size, hold-open and marking for each of the twelve Sterling door closers and floor springs, with the DC 2000 and DC 2600 compared.
- How to adjust a floor spring: speed, latching and alignmentThis guide explains what the two speed valves, the 90 degree hold open and the three alignment adjustments inside the box each do, and the order to work through them when a door slams or will not close.
Rated for
similar doors.
The models rated nearest to the FS 3120: the same type first, then the closest of another type.
Specifying the
FS 3120?
Send the door schedule with quantities, door weights, widths and finishes. Sterling quotes per project.
- Fitting, adjustment or sparesQuestions about fitting, adjustment or spares go straight to the Sterling sales desk. For warranty terms on the FS 3120, contact us.
- Emailinfo@mmegllp.com
- HoursMonday to Saturday, 10:00 AM to 6:00 PM IST
- PricesOn quotation, per project
- DealersDealer network across India. Become a dealer