Triple Pane Window Options
There are two main types of triple pane windows. The first uses a frame that has a very similar depth to a normal double pane window. In this case, the third pane of glass is slid in between the two panes. This is the cheaper, but less effective triple pane option.
The second option uses a deeper frame in which the distance between the inner and outer frame in the middle frame is wider, which provides for better sound control. This approach will be more expensive but obviously more effective as well. Consumers can either ask about which method their triple pane window offers, or can ask for the performance numbers, which should be a good indication of which method is in place.