DormaConcealed Floor Spring
| Item Code | BTS 75 V EN 1-4 |
| Certification | Tested to EN 1154 |
| Length | 285 mm |
| Width | 82 mm |
| Height | 50 mm |
| Max Door Weight | 120 kg |
| Max Door Width | 1100 mm |
| Suitable For | Single & Double Action Doors, Fire and Smoke check Doors, Standard & External Doors |
- Concealed installation
- Adjustable spring size 1-4
- Non-handed for single and double-acting doors
- Mechanical backcheck
Adjustable spring power from size 1–4 allows the necessary adjustment required for both barrier-free and non-barrier-free openings, giving ultimate installation flexibility.
