Installing Doorballs is easy!   No matter which style you buy, you’ll have no problem installing Doorballs to whatever door you think they’ll hang best from.   We ship with complete kits to make sure they mount perfectly and permanently.

How to Install a Knocker Onto a Wood or Hollow Metal Door

Our door knocker has threads that go all the way through the door. In a hollow metal door, there is only air between the interior and exterior portions of the door, so you must use hardware that secures the knocker on the interior of the door. Measure the thickness of the door in inches. The Doorballs through-the-door knockers fit doors that measure between 1-1/2 and 2- 1/4 inches thick.  The threads will go through the door and connect to one of the two sex bolts that are included in the package.  If you feel you are risk of someone trying to steal your balls, we recommend both bolts but if you think one bolt will be sufficient, you can get away with only mounting the top threads through the door on the other side.  You will still have to drill two holes regardless, however the bottom one perhaps doesn’t need to go all the way through and can only be used for positioning the knocker if you wish.
Determine the height for the door knocker; they are generally located at an average adult’s eye level, or approximately 4 1/2 feet from the ground. Place the door knocker on the door and mark the center of the mounts with a pencil or a piece of chalk. Do the same measurements on the interior of the door to ensure the holes align properly. Press an awl against each mark and tap the awl gently with a hammer. The small indentions make drilling easier.
Select a drill bit that is the size of the mounting sleeves and drill from both sides of the door. Doorballs recommends drilling half way through the outside door panel and half way through the inside door panel before drilling all the way through. Drill the hole just barely wide enough for the mounting sleeves to pass through.
Hold the door knocker against the exterior side of the door and align the knocker with the drilled holes. Slide the mounting sleeves through the door knocker holes and through the door until the sleeves fit tightly in place. Ensure that the door knocker is flush against the door.
Twist the threaded screws into the mounting sleeves and tighten them with a screwdriver. Attach acorn nuts to the ends of the screws and tighten with vice grip pliers or a nut driver. Turn the acorn nuts clockwise to secure them. The acorn nuts will be visible from the interior of the metal door. Acorn nuts have a dome-like end that gives them a finished appearance, visually appealing when looking at the interior side of the door.

 Things You Will Need

  • Doorballs, Chalk or pencil, Hammer (for metal door mostly)
  • Electric drill and drill bit
  • Sex Bolts (included)
  • Screwdriver


  • To reduce the risk of splintering, drill small pilot holes in the door before you drill with a larger drill bit.