Choosing Front Door Number Combinations If you are considering purchasing new patio doors for your deck or patio space, one option worth looking into is purchasing a matching stainless door number. This will create a perfect match between your door and your patio's exterior and make the area seem as though it was always part of the design plan from the beginning. If this is the case, you may consider utilizing stainless door numbers on your current patio doors. These are quite easy to install in any style of exterior door and can be made to fit well into the appearance of the outside of your house.