# Who does what: builder, dealer, installer, designer

Lesson 3 of [Read a Wellness Room Builder Listing](https://privatewellnessrooms.fyi/academy/read-a-wellness-room-builder-listing.md), 12 minutes.

The directory sorts firms into categories. The names look alike. The jobs differ. Common roles - A custom builder makes a sauna or room to fit your space. - A dealer sells saunas, kits or equipment. - An installer fits a unit or kit in your home. - A designer plans the room and may not build it. One…

The rest of this lesson is for learners enrolled in the course. [See how Read a Wellness Room Builder Listing works](https://privatewellnessrooms.fyi/academy/read-a-wellness-room-builder-listing.md).

Also on the [web page](https://privatewellnessrooms.fyi/academy/read-a-wellness-room-builder-listing/builder-dealer-installer-designer).