This model is made from Stainless Steel. To ensure there is no chance of rust you would need to wipe the box down every now and again, especially in coastal areas.

To avoid this you might be better opting for a Brabantia post box. These models are lacquered and offer the best protection against the elements.

This post box is designed to be fastened to a brick wall and would easily fall over if it was left free standing. The Royal Black - Pillar Post Box may be a better option as this is specifically designed to be free standing.