What size peephole do I need for my door?

The size of the door peephole you need for your door depends on two main factors: the thickness of your door and your individual preference regarding the field of view. These are the steps you should go through to find out which size you need:

• Measure the thickness of your door: Door peepholes are designed to fit doors of different thicknesses. It is important that the peephole is long enough to extend through the full thickness of your door and can be securely fastened on both sides.
  
• Decide on the desired field of view: Door peepholes are available with different fields of view, usually between 160 and 200 degrees. A wider angle provides a broader field of view, but may also cause more distortion. Choose an angle that meets your personal security needs.
  
• Choose the material: Door peepholes come in various materials, such as brass or chrome. You should choose the material that best matches your door and your aesthetic preferences.
  
• Check the diameter: The most common diameter for door peepholes is between 14 mm and 16 mm. Make sure the diameter of the hole in your door matches that of the peephole you choose.

Please remember to have the installation carried out by a professional to ensure that your door peephole is installed correctly and securely.