Product description


Board strengthening system perfect for leveling distortions.

System perfectly corrects distortions and enables maintaining the straight surface of door.

Depending on the surface being convex or concave, turning the clamp produces a compressive force that corrects the surface. Tightening the screw and the adjusting nut produces a tensile force, that levels the board.



In the inner side of the door. It is recommended to use two fittings for every door leaf.

Dedicated for closets and furnishings.

EXPANDER FIX especially recommended for straightening already distorted boards. Very strong.

EXPANDER STAB especially recommended for stabilizing boards, prevents distortion.

EXPANDER MASK as above, version with cover profile – the fitting is not visible. This fitting enables to cover the mills (they are not visible after the assembly). Often used in the door frame.