There is no minimum size for placing a walk-in shower. However, it’s recommendable to have at least 1 meter around the shower head. It’s also important to separate the shower area from the rest of the bathroom using a (glass) partition or wall, this blocks the splashing of water.
Note: To achieve the best possible result, please carefully read the installation guide because the exact instructions depend on the type of shower drain. We recommend that the shower drain installation should only be done by trained professionals in compliance with local building regulations.