Available Variants: Hold Open - Yes - 90 degrees, No
DORMA BTS 75 EN1-4 floor spring body with 90° hold-open. Including cement box and standard spindle.
The BTS 75V is a universal non-handed floor spring for left hand (LH) or right hand (RH) single and double action doors. With adjustable spring stength and closing speed, with closing action operational from approx. 175°. Featuring hydraulically fully controlled closing cycle and mechanical backcheck.
This model is hold-open at 90°.
Suitable for installation on doors up to 1100mm (W) with a max. 120kg leaf weight.
Extended spindles - Refer FAQ
| Dimensions | Weight |
| 285mm (L) x 82mm (W) x 50mm (H) | 3.0kg |
Spring Strength: EN1-4
Maximum Weight in kg: 120
Has Hold-open: Yes, 90°
Max Door Width In mm: 1100
