Waterproof in-ceiling speakers are designed to be used in environments where moisture or water may be present. The speakers are typically used in bathrooms, saunas, outdoor spaces, or other areas where the speaker may be exposed to moisture or water.

The speakers are typically designed with materials and construction methods that can withstand exposure to water without being damaged. They are often made with materials such as plastic or aluminum, and may be coated with a waterproof sealant to protect the speaker components from moisture.