Usually a designer door handle comes with a screw on rose which you must undo anticlockwise to reveal the positioning of the screw holes.
Unscrew the rose and hold the handle so you can see the back of the rose to position the square rod. Make sure the rod is in position so the split is vertical and the concave cut out is facing downwards. This is so the grub screw that holds the spindle into the handle can force its way into the spindle and lock the bar in position.
Undo the rose and hold the handle so you can see the back of the rose to position the square rod. Make sure the rod is in position so the split is vertical and the concave cut out is facing downwards. This is so the grub screw that holds the spindle into the handle can force its way into the spindle and lock the bar in position.
Locate the grub screw which is normally positioned underneath the handle. Do the grub screw up with the allen key provided.
Push the handle with the spindle through the follower (square hole in the latch or lock case) until the rose fits flush with the door and the handle horizontal.
Mark the position where the bolt through fixings go and remove the handle.
Drill a horizontal hole to the size of the bolt through fixings through the door.
Put the spindle with the handle attached through the door and place the other handle over the spindle.
You will now need to fix the handles with the 2 x bolt through fixings provided. The bolt through fixings come in two parts a male and a female section. Place the male section through the handle and into the pre drilled hole and from the other side place the female (threaded section) part through the rose and into the male section. Tighten the two sections together. Repeat with the second bolt.
Once you are happy that the handles are in the correct position attach the rose with the screws provided.
Do the grub screw up on the other handle and reattach the screw on roses on both sides.
Your door handles are now fitted and ready to use.