Prevents doors warping in either direction or straightens doors which have become warped
particularly suitable for doors that are subjected to extremely differing environmental conditions between the outside and the inside (e.g. front doors or wet room doors)
supports the functionality of the door hardware (e.g. multiple locking devices or electric strikes) as changing or increasing pressure by the door is prevented

max. 2,225

Threaded bar, bolt and support plate: Steel
U-profile: Plastic

Threaded bar, bolt and support plate: Blue galvanized

For recess mounting and screw fixing: Invisible from outside, concealed by the door surface
easy adjustment and re-adjustment
set for front doors or interior doors: For installation during production, tensioner is positioned at top edge of door
universal set: Also for retrofitting, tensioner is positioned at top edge of door