Stainless steel mirrors will only rust under extreme or aggressive weather conditions. Compared to other materials used for mirrors, stainless steel has the highest resistance to corrosion.
You can choose between two types of stainless steel mirrors: Indoor or Outdoor.
The difference between indoor and outdoor mirrors is the frame. The frame of the outdoor stainless steel mirror provides extra durability against rain, snow, wind, and sunlight.
An outdoor mirror can be used both inside and outside. But indoor mirror may rust when used outside.