Here at ASI we are always looking for ways to improve our product and procedures. Over the span of 15 years we tried multiple screen systems. At the time, we felt they were great products for our customers. However, we soon realized that we were servicing these units over and over again. This inspired us to create a system that would eliminate all these issues. As a result, the Fortress was created. Every issue we encountered was an opportunity for us to create a screen that could withstand the harshest of elements. With thousands of units operating across the USA, the Fortress has become the standard by which all others are measured. If you want a system that can withstand the elements and are tired of the costly service calls, then we have the screen for you.