Floor spring for single leaf fire protection doors up to 1400 mm leaf width with adjustable closing force EN 3-6 and without hold-open device
 
Closing force with variable adjustment EN3-6
Can be used for right and left hand doors without conversion
Delayed closing adjustable to adapt the closing force of the door up to approx 80° opening angle
Closing speed can be individually adjusted
Hydraulic latching action which accelerates the door shortly before it is closed
Integrated back check, slows down doors that are thrown open forcefully