DORMA BTS 80 EN4 floor spring body, including 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 mechanical 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 1100mm (W) with a max. 300kg leaf weight.
Extended spindles - Refer FAQ
| Dimensions | Weight |
| 341mm (L) x 78mm (W) x 60mm (H) | 7.1kg |