Place the chair upside down in a non-slip place and unscrew the existing base. Place the elevations on the mounting site, use the old washers if necessary. Check the total depth from the frame + elevations + chassis and check that the supplied screws are not too long. If the screws are too long, more washers must be fitted in between the screw and the chassis. Tighten the screws carefully.
OUTSIDE (furn.leg)
INSIDE (furn.leg)
ON-TOP (furn.leg)