Window shopping can be challenging, with the multitude of great possibilities to choose from. Andersen has a variety of product lines, and here at Opal Enterprises, we carry three different Andersen brand window series: 100 Series 400 Series A-Series If you want to purchase Andersen Windows to renew the look of your home, Opal Enterprises offers 35% off labor and a lifetime labor guarantee! Let’s consider in more detail what makes each series unique. Also, be sure to view and share our handy guide below.