Available Variants: Spring Strength - EN3, EN4, EN6
The DORMA BTS80 EN3 floor spring body includes cement box and standard spindle. It is a universal non-handed floor spring for single and double action doors. With adjustable closing speed and closing action from approx. 175°, with hydraulically controlled closing cycle and mechnical backcheck.
Integral pressure compensation feature allows for temperature-independent hold-open between 75° and 175° (removable). Hold-open start point and delayed action is easily adjustable by valve.
Suitable for installation on doors up to 950mm (W) with a max. 300kg leaf weight.
Extended spindles - Refer FAQ
| Dimensions | Weight |
| 341mm (L) x 78mm (W) x 60mm (H) | 7.1kg |
Has Backcheck: Yes
Spring Strength: EN3
Maximum Weight in kg: 300
Has Hold-open: Yes, Adjustable 75° - 175°
Max Door Width In mm: 950
