A bathroom floor drain is a plumbing fixture that is installed on the floor of a bathroom to allow water to drain away. A 150x150mm stainless steel floor drain is a specific size and type of floor drain that is typically used in small to medium-sized bathroom spaces. Stainless steel is a popular material for bathroom floor drains because it is durable, corrosion-resistant, and easy to clean. A floor drain made from stainless steel is likely to last for many years with proper care and maintenance. It is also important to regularly clean and maintain your floor drain to ensure that it is functioning properly.