Mounting of ball-bearing partial extension runners for 27 mm groove: Do-It-Yourself with Hettich

If you wish to fit ball-bearing partial extension runners into a piece of furniture without pre-drilled hole line, you must first mark the fixing positions. Runners are always mounted flush with the front edge of furniture. The first hole -- regardless of runner length - is always 37 mm in from the front edge. All other holes are to be positioned on a horizontal line, determined by drawer length and height.

Now hold the roller runner in place and screw it to the carcase at the marked positions or at the drill holes already provided.

Having done this, push the drawer by its grooves onto the runners and fix the drawer in place using an M4 screw provided.