These plastic anchors fold flat to fit inside a pilot hole drilled into the door.
How to put a door handle on a hollow door.
Make sure the hinge knuckles are lined up with the frame correctly and mark position of hinge using carpenter s pencil.
The cut out for the knob is the same size and so it will go into the hole for it regardless of whether or not the door is a hollow core door or solid.
Installing the handle is a five minute process.
Installing handles on hollow panel bi fold doors drill the inside hole with a 1 4 inch bit and with the door laying flat spray in a little expanding foam insulation maybe a 15 second squirt after its setup redrill if you ve already drilled through fill the hole with a woodscrew until the foam has set up about an hour.
The spindle holes are where the door handle will eventually be inserted.
Follow the template instructions to drill the hole in the right location.
On any locking handle the screws will be on the interior side of the door and the handle side that locks will be on the exterior side of the door.
If your doors have been fitted correctly and the screws are baggy try getting some match sticks and pva glue and push them into the screw holes.
Drill these two spindle holes on both the front and back of the door.
Once inserted a small key is used to open the anchor which spreads out interior brackets to clamp the collar of the anchor against the door face like a toggle bolt.
Create the spindle holes using a drill being careful to keep the drill parallel with the floor.
If the doors have been fitted wrong way round you will always have trouble with the handles as in most cases it is hollow on the hinge side.
The handle will come in two halves that go on either side of the door.