When purchasing a bathroom light or vanity, it is important to understand how much exposure to water the fixture can tolerate based on where you would like to have it installed. The best way to understand is by looking at its IP Code and Zone Designations. The IP Code, or Ingress Protection Code, shows us how well the enclosure of the fixture protects against water particles, while the Zone destination states how much tolerance is needed based on the location

The Rule of thumb for IP code is the higher the number, the better the protection.

First Digit - The first digit indicates the level of protection that the enclosure provides against access to hazardous parts (e.g., electrical conductors, moving parts) and small particles. The numerical ratings are 0-6, with zero offering no protection and six offering total protection.

Second Digit - The second digit indicates the level of protection that the enclosure provides against the presence of water or other liquids. This can also include non-direct forms of contact, i.e. misting, dripping, and submersion. These numerical ratings are 0-8, with zero offering no protection and eight offering total protection.