It limits the sliding door and window opening range.

Its wedge shape allows it to adapt to any type of sliding door or window without causing any damage.

Fixation system with self-adhesive tape that enables the wedge to be removed and doors and windows to be opened completely.

Open the window and calculate the maximum space desired in order to ventilate the room.

Make a pencil mark at the meeting of the two sheets.

Peel off the protective paper from the adhesive and place the safety block on the mark made in the frame, with the wedge pointing towards the sheet to be blocked.

The window stops at the indicated point, without damaging the rail or scratching the frame.

As the self-adhesive tape is a little longer, it enables the safety block to be adjusted to work better or to change the space allocated for ventilation. In addition, it enables the safety block to be removed and re-attached as often as required.